Chansey (EX FireRed & LeafGreen 19/112)
0
Colorless

Sing

The Defending Pokémon is now Asleep.

Colorless Colorless Colorless

Egg Surprise

Flip a coin. If heads, Chansey does 50 damage to the Defending Pokémon. If tails, remove 5 damage counters from Chansey. (All if there are less than 5.)