Krakkos, Eternal Tempest

Flying, hexproof, indestructible
When Krakkos, Eternal Tempest enters the
battlefield, for each opponent, gain control of
target permanent that player controls.
{3}{b}{r}: Destroy target creature or planeswalker,
then create a Treasure token. (It's an artifact with
"{t}, Sacrifice this artifact: Add one mana of any
color.")