Bowser, King Koopa

Sacrifice another creature: Bowser gets +1/+1
and gains trample until end of turn.
{1}{r}: Bowser gets +2/+0 until end of turn.
When Bowser enters the battlefield, you become
the monarch.
Whenever you become the monarch, gain control
of target creature or artifact an opponent controls
for as long as you're the monarch. It loses all
abilities, can't attack or block, and
can't be sacrificed.