Arrow and Quiver

Deathtouch, Menace
Whenever a player casts a creature spell, put a hit counter on target creature or player.
{b},{t}: Arrow and Quiver deals damage equal to
their power to any target with a hit counter on it.
"Aww, I think Arthur had a crush! It's okay Arthur,
she didn't deserve you, otherwise she'd be alive!"
—Arrow and Quiver