Hexkama, Covenant of Dark

Partner with Keilyah, Covenant of Light
Deathtouch, retribution, hexproof from Humans
Insular - If you spent only black mana to cast this spell, double any +1/+1 counters put on this creature.
Pay {x}{b}: Remove X +1/+1 counters from this creature and put onto another creature you control. (only activate as a sorcery)