Hot answers tagged yu-gi-oh
That does not work for two reasons. The first reason is that Shard of Greed can only use greed counters. This does not necessarily mean that you can only use counters from its own effect, but at the moment there are no other card that exist in the game that use greed counters.The second reason is that the card explicitly says: You can send this card with ...
Shard of Greed specifically needs "Greed Counters" so even if you did use the "guard counters" off Card Guard the effect of Shard of Greed wouldn't be useable as they are incorrect counters. You would need to wait until shard of greed had built up the counters from it's own effect before you could use it.
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