Tash, The Coffeelock

Whenever an opponent plays any non-Creature
spell, add a Stress Counter to Tash
You may remove X Stress Counters
from Tash to give target creature X -1/-1
Counters
Whenever X Stress Counters are removed from
Tash, you may cast a card from your graveyard
that costs X or less without paying it's mana cost