Happiny (Unbroken Bonds 161/214)

Abilities

Once during your turn (before your attack), you may flip a coin. If heads, heal 60 damage from 1 of your Pokémon. If you use this Ability, your turn ends.

Usually it's a well-behaved Pokémon, but if you take its round rock away, it will cry and fuss and throw a big old tantrum.