that card is very confusing, and at some points vague.
Kruptonite Drop: Opponent takes 20 damage (weak), but player's chance of attack failure is now 10%
Which player? I'd think you mean the player who dealt the card, but you used but instead of and on "Nemesis". Or did you? This card doesn't make sense.
Torn Face: Opponent's weapon is disabled. Disabled? How long? Who's attack failure?
WHAT IS ATTACK FAILURE?