Minh-Gatil, Immortal Guardian

Hexproof, Indestructible
You take damage in the form of Storm Counters.
When you reach 15 Storm Counters, you lose
{2}: You take damage the normal way this
turn. At the end of you turn, your storm counters
do not reset.
{t},{x}{2}: You lose X Storm Counters.
(You're now 4 more away from 15 than you were.)
I already told you. You. Shall. Not. Pass.