Sudden Spoiling reads
Creatures target player controls become 0/2 and lose all abilities until end of turn.
Can someone help me find a list of abilities that they lose?
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From the comp rules glossary:
- Text on an object that explains what that object does or can do.
- An activated or triggered ability on the stack. This kind of ability is an object.
Every item of rules text in the text box (the box in the lower half of the card) is an ability. Doesn't matter whether it's keywords or full statements; static, triggered, or activated. In addition, lands with a basic land type have an implied ability: "T: Add 1 [color] mana to your mana pool."
In handwavy terms, "lose all abilities" means "pretend there's nothing printed in the card's textbox".
More precisely, you apply effects that add or take away abilities in "timestamp" order. So, for example:
(Power/toughness-modifying effects are actually a bit trickier, since they are applied in layers. So the Frog is 3/3, not 1/1. That's a different question.)
Alex's answer is quite complete, however his quoted point 2 leaves the impression that an ability on the stack would be affected. This is incorrect.
From the Gatherer rulings on this card
Sudden Spoiling doesn't counter abilities that have already triggered or been activated. In particular, you can't cast this fast enough to stop a creature's "At the beginning of your upkeep" or "When this creature enters the battlefield" abilities from triggering.
However he's quite correct in pointing out the way that new effects would interact with cards you had already suddenly spoiled :) It should be clear as well that any creature cast after your Sudden Spoiling would not be affected by it.
Not exactly what you're asking for - as keyworded abilities are only a subset of all abilities, but this page has an up-to-date list of keyword abilities in Magic the Gathering, which you may find fun to peruse:
Having said the above, I don't think you'll ever find a more complete list of abilities that are removed by Sudden Spoiling; as such a list would have to include all the non-flavour-text text written on thousands upon thousands of Magic cards!