Koga's Koffing (Gym Challenge 48/132)
0
Grass

Smokescreen

10

If the Defending Pokémon tries to attack during your opponent's next turn, your opponent flips a coin. If tails, that attack does nothing.

Grass Colorless

Obscuring Gas

30

Flip a coin. If heads, shuffle Koga's Koffing and all cards attached to it into your deck (after doing damage).