Byr, the Titan Boar

Rather than pay {2} for each time you've cast this
spell from the command zone this game, put a
scent counter on target creature an opponent
controls that many times.
Whenever a creature dealt damage by Byr, the
Titan Boar dies, if it had a scent counter on it,
put a +1/+1 counter on Byr, then draw a card.