Dr. Livesey

{w}{x}{x}, {t}: Put a health counter on X creatures.
If the creature attacked or blocked, remove one
health counter from it. If all the health tokens
have been removed from the creature, exile it in
the next end step.
"Ahahahaha! Hello! Ehe-ehe! I'm Dr. Livesey! Yes!
What's the matter?!"
—Dr. Livesey