Mischievous Snail Shaman

{t}: Add {b}.

{1}{p/b}, {t}: Mischievous Snail Shaman deals X damage to target creature, where X is equal to the number of creatures that died this turn. Activate only as a sorcery.

"I'm going to give you a gift, a nasty little spell of
my own creation. It's just perfect for a little one like you! Ohoho!"