Gryrro, Lord of the Skies

Familiar (Starts outside the game face up. Can't be
cast. If it would leave the battlefield, exile it instead.)
Flying, trample
Whenever Gryrro deals damage to a player, put
two +1/+1 counters on Gryrro. Then, you may
search your library for a creature card with mana
value X or less, where X is half the number of
counters on Gryrro, and put it onto the battle-
field under your control. Then shuffle.