4 reformatted the external pages block, and incorporated the Scryfall link provided in chat
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First of all, keep in mind that all Un-set questions are always up to interpretation, and may be played different by different playgroups. Although I try to be as precise as possible, due to the lack of official rulings, no definitive answer can be given.

Currently Banned/Restricted Cards

A list of currently banned cards can be found at the official Wizards pages. This is the most readable of all the online sources I'm aware of, and should also be the one that's kept up to date most reliably.

Previously Banned/Restricted Cards in Common Formats

I'm not aware of any official list specifically composed for this purpose, but the Timeline of Banned/Restricted Cards on the GamePedia MtG Wiki should bethere are other sources that more or less specific for this purpose will help with the next closest thing.search:

Basically, you would be able to tutor for any card from that listthese lists, and no other card (providedprovided that the list is accurate).

Previously Banned Cards in Commander and Other Formats

As the previously linked page doesn'tpages don't cover the Commander format, you may resort to the official changelog, which keeps track of bans, but doesn't provide any info prior to September 2009. Whichever logic you apply, going by that list will likely be the most sensible thing to do, simply because of its official origin. That said, there should be other threads you'll find, pointing you towards history further back in time, such as this one that has been suggested in the comments.

Furthermore, there are many more widely played formats (such as Tiny Leaders) I could provide a link to, but the reality is that if you include all those formats in your definition of previously banned, some person will eventually just invent a format that bans every card but basic lands, and therefore will be able to tutor all cards.

A Note on Ante Cards

Ante cards are tutorable, but due to the way they function, they won't reap you any benefits, as confirmed by Mark Rosewater:

Q: Can Spike, Tournament Grinder get ante cards?
A: Ante no longer exists, so they aren’t usable.

In other words, while you can tutor banned or restricted cards, you won't necessarily be able to use them due to the magnitude of changes to the rules over time. Then again, this would also be subject to different interpretations of Un-sets, as stated in the beginning, so your mileage may vary.

First of all, keep in mind that all Un-set questions are always up to interpretation, and may be played different by different playgroups. Although I try to be as precise as possible, due to the lack of official rulings, no definitive answer can be given.

Currently Banned/Restricted Cards

A list of currently banned cards can be found at the official Wizards pages. This is the most readable of all the online sources I'm aware of, and should also be the one that's kept up to date most reliably.

Previously Banned/Restricted Cards

I'm not aware of any list specifically composed for this purpose, but the Timeline of Banned/Restricted Cards on the GamePedia MtG Wiki should be the next closest thing. Basically, you would be able to tutor for any card from that list, and no other card (provided that the list is accurate).

Previously Banned Cards in Commander and Other Formats

As the previously linked page doesn't cover the Commander format, you may resort to the official changelog, which keeps track of bans, but doesn't provide any info prior to September 2009. Whichever logic you apply, going by that list will likely be the most sensible thing to do, simply because of its official origin. That said, there should be other threads you'll find, pointing you towards history further back in time, such as this one that has been suggested in the comments.

Furthermore, there are many more widely played formats (such as Tiny Leaders) I could provide a link to, but the reality is that if you include all those formats in your definition of previously banned, some person will eventually just invent a format that bans every card but basic lands, and therefore will be able to tutor all cards.

A Note on Ante Cards

Ante cards are tutorable, but due to the way they function, they won't reap you any benefits, as confirmed by Mark Rosewater:

Q: Can Spike, Tournament Grinder get ante cards?
A: Ante no longer exists, so they aren’t usable.

In other words, while you can tutor banned or restricted cards, you won't necessarily be able to use them due to the magnitude of changes to the rules over time. Then again, this would also be subject to different interpretations of Un-sets, as stated in the beginning, so your mileage may vary.

First of all, keep in mind that all Un-set questions are always up to interpretation, and may be played different by different playgroups. Although I try to be as precise as possible, due to the lack of official rulings, no definitive answer can be given.

Currently Banned/Restricted Cards

A list of currently banned cards can be found at the official Wizards pages. This is the most readable of all the online sources I'm aware of, and should also be the one that's kept up to date most reliably.

Previously Banned/Restricted Cards in Common Formats

I'm not aware of any official list specifically composed for this purpose, but there are other sources that more or less specific for this purpose will help with the search:

Basically, you would be able to tutor for any card from these lists, provided that the list is accurate.

Previously Banned Cards in Commander and Other Formats

As the previously linked pages don't cover the Commander format, you may resort to the official changelog, which keeps track of bans, but doesn't provide any info prior to September 2009. Whichever logic you apply, going by that list will likely be the most sensible thing to do, simply because of its official origin. That said, there should be other threads you'll find, pointing you towards history further back in time, such as this one that has been suggested in the comments.

Furthermore, there are many more widely played formats (such as Tiny Leaders) I could provide a link to, but the reality is that if you include all those formats in your definition of previously banned, some person will eventually just invent a format that bans every card but basic lands, and therefore will be able to tutor all cards.

A Note on Ante Cards

Ante cards are tutorable, but due to the way they function, they won't reap you any benefits, as confirmed by Mark Rosewater:

Q: Can Spike, Tournament Grinder get ante cards?
A: Ante no longer exists, so they aren’t usable.

In other words, while you can tutor banned or restricted cards, you won't necessarily be able to use them due to the magnitude of changes to the rules over time. Then again, this would also be subject to different interpretations of Un-sets, as stated in the beginning, so your mileage may vary.

3 removed paragraph about ambiguity of which cards may be tutored
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First of all, keep in mind that all Un-set questions are always up to interpretation, and may be played different by different playgroups. Although I try to be as precise as possible, due to the lack of official rulings, no definitive answer can be given.

Currently Banned/Restricted Cards

A list of currently banned cards can be found at the official Wizards pages. This is the most readable of all the online sources I'm aware of, and should also be the one that's kept up to date most reliably.

Previously Banned/Restricted Cards

I'm not aware of any list specifically composed for this purpose, but the Timeline of Banned/Restricted Cards on the GamePedia MtG Wiki should be the next closest thing. Basically, if your interpretation is that Spike can tutor a card that has been banned or restricted at some point, but isn't anymore, you would be able to tutor for any card from that list, and no other card (provided that the list is accurate).

Previously Banned Cards in Commander and Other Formats

As the previously linked page doesn't cover the Commander format, you may resort to the official changelog, which keeps track of bans, but doesn't provide any info prior to September 2009. Whichever logic you apply, going by that list will likely be the most sensible thing to do, simply because of its official origin. That said, there should be other threads you'll find, pointing you towards history further back in time, such as this one that has been suggested in the comments.

Furthermore, there are many more widely played formats (such as Tiny Leaders) I could provide a link to, but the reality is that if you include all those formats in your definition of previously banned, some person will eventually just invent a format that bans every card but basic lands, and therefore will be able to tutor all cards.

A Note on Ante Cards

Ante cards are tutorable, but due to the way they function, they won't reap you any benefits, as confirmed by Mark Rosewater:

Q: Can Spike, Tournament Grinder get ante cards?
A: Ante no longer exists, so they aren’t usable.

In other words, while you can tutor banned or restricted cards, you won't necessarily be able to use them due to the magnitude of changes to the rules over time. Then again, this would also be subject to different interpretations of Un-sets, as stated in the beginning, so your mileage may vary.

First of all, keep in mind that all Un-set questions are always up to interpretation, and may be played different by different playgroups. Although I try to be as precise as possible, due to the lack of official rulings, no definitive answer can be given.

Currently Banned/Restricted Cards

A list of currently banned cards can be found at the official Wizards pages. This is the most readable of all the online sources I'm aware of, and should also be the one that's kept up to date most reliably.

Previously Banned/Restricted Cards

I'm not aware of any list specifically composed for this purpose, but the Timeline of Banned/Restricted Cards on the GamePedia MtG Wiki should be the next closest thing. Basically, if your interpretation is that Spike can tutor a card that has been banned or restricted at some point, but isn't anymore, you would be able to tutor for any card from that list, and no other card (provided that the list is accurate).

Previously Banned Cards in Commander and Other Formats

As the previously linked page doesn't cover the Commander format, you may resort to the official changelog, which keeps track of bans, but doesn't provide any info prior to September 2009. Whichever logic you apply, going by that list will likely be the most sensible thing to do, simply because of its official origin. That said, there should be other threads you'll find, pointing you towards history further back in time, such as this one that has been suggested in the comments.

Furthermore, there are many more widely played formats (such as Tiny Leaders) I could provide a link to, but the reality is that if you include all those formats in your definition of previously banned, some person will eventually just invent a format that bans every card but basic lands, and therefore will be able to tutor all cards.

A Note on Ante Cards

Ante cards are tutorable, but due to the way they function, they won't reap you any benefits, as confirmed by Mark Rosewater:

Q: Can Spike, Tournament Grinder get ante cards?
A: Ante no longer exists, so they aren’t usable.

In other words, while you can tutor banned or restricted cards, you won't necessarily be able to use them due to the magnitude of changes to the rules over time. Then again, this would also be subject to different interpretations of Un-sets, as stated in the beginning, so your mileage may vary.

First of all, keep in mind that all Un-set questions are always up to interpretation, and may be played different by different playgroups. Although I try to be as precise as possible, due to the lack of official rulings, no definitive answer can be given.

Currently Banned/Restricted Cards

A list of currently banned cards can be found at the official Wizards pages. This is the most readable of all the online sources I'm aware of, and should also be the one that's kept up to date most reliably.

Previously Banned/Restricted Cards

I'm not aware of any list specifically composed for this purpose, but the Timeline of Banned/Restricted Cards on the GamePedia MtG Wiki should be the next closest thing. Basically, you would be able to tutor for any card from that list, and no other card (provided that the list is accurate).

Previously Banned Cards in Commander and Other Formats

As the previously linked page doesn't cover the Commander format, you may resort to the official changelog, which keeps track of bans, but doesn't provide any info prior to September 2009. Whichever logic you apply, going by that list will likely be the most sensible thing to do, simply because of its official origin. That said, there should be other threads you'll find, pointing you towards history further back in time, such as this one that has been suggested in the comments.

Furthermore, there are many more widely played formats (such as Tiny Leaders) I could provide a link to, but the reality is that if you include all those formats in your definition of previously banned, some person will eventually just invent a format that bans every card but basic lands, and therefore will be able to tutor all cards.

A Note on Ante Cards

Ante cards are tutorable, but due to the way they function, they won't reap you any benefits, as confirmed by Mark Rosewater:

Q: Can Spike, Tournament Grinder get ante cards?
A: Ante no longer exists, so they aren’t usable.

In other words, while you can tutor banned or restricted cards, you won't necessarily be able to use them due to the magnitude of changes to the rules over time. Then again, this would also be subject to different interpretations of Un-sets, as stated in the beginning, so your mileage may vary.

2 added banned/restricted links for the Commander format, as suggested in the comments
source | link

First of all, keep in mind that all Un-set questions are always up to interpretation, and may be played different by different playgroups. Although I try to be as precise as possible, due to the lack of official rulings, no definitive answer can be given.

Currently Banned/Restricted Cards

A list of currently banned cards can be found at the official Wizards pages. This is the most readable of all the online sources I'm aware of, and should also be the one that's kept up to date most reliably.

Previously Banned/Restricted Cards

I'm not aware of any list specifically composed for this purpose, but the Timeline of Banned/Restricted Cards on the GamePedia MtG Wiki should be the next closest thing. Basically, if your interpretation is that Spike can tutor a card that has been banned or restricted at some point, but isn't anymore, you would be able to tutor for any card from that list, and no other card (provided that the list is accurate).

Previously Banned Cards in Commander and Other Formats

As the previously linked page doesn't cover the Commander format, you may resort to the official changelog, which keeps track of bans, but doesn't provide any info prior to September 2009. Whichever logic you apply, going by that list will likely be the most sensible thing to do, simply because of its official origin. That said, there should be other threads you'll find, pointing you towards history further back in time, such as this one that has been suggested in the comments.

Furthermore, there are many more widely played formats (such as Tiny Leaders) I could provide a link to, but the reality is that if you include all those formats in your definition of previously banned, some person will eventually just invent a format that bans every card but basic lands, and therefore will be able to tutor all cards.

A Note on Ante Cards

Ante cards are tutorable, but due to the way they function, they won't reap you any benefits, as confirmed by Mark Rosewater:

Q: Can Spike, Tournament Grinder get ante cards?
A: Ante no longer exists, so they aren’t usable.

In other words, while you can tutor banned or restricted cards, you won't necessarily be able to use them due to the magnitude of changes to the rules over time. Then again, this would also be subject to different interpretations of Un-sets, as stated in the beginning, so your mileage may vary.

First of all, keep in mind that all Un-set questions are always up to interpretation, and may be played different by different playgroups. Although I try to be as precise as possible, due to the lack of official rulings, no definitive answer can be given.

Currently Banned/Restricted Cards

A list of currently banned cards can be found at the official Wizards pages. This is the most readable of all the online sources I'm aware of, and should also be the one that's kept up to date most reliably.

Previously Banned/Restricted Cards

I'm not aware of any list specifically composed for this purpose, but the Timeline of Banned/Restricted Cards on the GamePedia MtG Wiki should be the next closest thing. Basically, if your interpretation is that Spike can tutor a card that has been banned or restricted at some point, but isn't anymore, you would be able to tutor for any card from that list, and no other card (provided that the list is accurate).

A Note on Ante Cards

Ante cards are tutorable, but due to the way they function, they won't reap you any benefits, as confirmed by Mark Rosewater:

Q: Can Spike, Tournament Grinder get ante cards?
A: Ante no longer exists, so they aren’t usable.

In other words, while you can tutor banned or restricted cards, you won't necessarily be able to use them due to the magnitude of changes to the rules over time. Then again, this would also be subject to different interpretations of Un-sets, as stated in the beginning, so your mileage may vary.

First of all, keep in mind that all Un-set questions are always up to interpretation, and may be played different by different playgroups. Although I try to be as precise as possible, due to the lack of official rulings, no definitive answer can be given.

Currently Banned/Restricted Cards

A list of currently banned cards can be found at the official Wizards pages. This is the most readable of all the online sources I'm aware of, and should also be the one that's kept up to date most reliably.

Previously Banned/Restricted Cards

I'm not aware of any list specifically composed for this purpose, but the Timeline of Banned/Restricted Cards on the GamePedia MtG Wiki should be the next closest thing. Basically, if your interpretation is that Spike can tutor a card that has been banned or restricted at some point, but isn't anymore, you would be able to tutor for any card from that list, and no other card (provided that the list is accurate).

Previously Banned Cards in Commander and Other Formats

As the previously linked page doesn't cover the Commander format, you may resort to the official changelog, which keeps track of bans, but doesn't provide any info prior to September 2009. Whichever logic you apply, going by that list will likely be the most sensible thing to do, simply because of its official origin. That said, there should be other threads you'll find, pointing you towards history further back in time, such as this one that has been suggested in the comments.

Furthermore, there are many more widely played formats (such as Tiny Leaders) I could provide a link to, but the reality is that if you include all those formats in your definition of previously banned, some person will eventually just invent a format that bans every card but basic lands, and therefore will be able to tutor all cards.

A Note on Ante Cards

Ante cards are tutorable, but due to the way they function, they won't reap you any benefits, as confirmed by Mark Rosewater:

Q: Can Spike, Tournament Grinder get ante cards?
A: Ante no longer exists, so they aren’t usable.

In other words, while you can tutor banned or restricted cards, you won't necessarily be able to use them due to the magnitude of changes to the rules over time. Then again, this would also be subject to different interpretations of Un-sets, as stated in the beginning, so your mileage may vary.

1
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