Tyhr, Monstrous Encounter

Tyhr, Monstrous Encounter power is equal
to his cost when it was cast.
{x}{g/w}{g/w}: Monstrosity X. (If this creature isn't
monstrous, put X +1/+1 counters on it and it
become monstrous.)
Whenever a creature with power less than Tyhr,
Monstrous Encounter dies, put a +1/+1 counter
on it.