Pokémon Trading Card Game - Silcoon - EX: Ruby & Sapphire 43

Poké-Body: Hard Cocoon
During your opponent's turn, if Silcoon would be damaged by an opponent's attack (after applying Weakness and Resistance), flip a coin. If heads, reduce that damage by 30.

Gooey Thread 10
The Defending Pokémon can't retreat until the end of your opponent's next turn.