Bessie, Ophiotaurus

Bane of Olympus—If Bessie, Ophiotaurus is sent
to the graveyard or exile, the player who caused
that event to happen gets an emblem with "All
creatures you control get +3/+3." If there is
already an identical emblem on the battlefield,
nothing happens.
"Bessie? But... he's too cute. He couldn't destroy the
world."
- Perseus Jackson, Seaweed Brain