Vaal Hazak, Hellish Fiend

Deathtouch, Hexproof
Vaal Hazak, Hellish Fiend cannot be blocked.
When Vaal Hazak, Hellish Fiend deals combat
damage to a player, put 1 effluvia counter on
each creature that player controls. Creatures with
effluvia counters have their toughness halved.
{b/g}{b}{g}: Destroy target creature with an effluvia counter on it.