UniVersus Teenage Mutant Ninja Turtles Leatherhead, Eager Expat TMNT01 5/186 Character Common

First Form: Add the top card of your rival's deck to their card pool face down. If they have 10 or more foundations, add the top 2 cards of their deck to their card pool face down instead.
Response Discard 1 card: After an attack is not blocked, it gets +1 or -1 damage for each card in your rival's card pool.