Ungoliant, devourer of All

reach, vigilance, lifelink
Ingest
Protection from multicolored

Devour X, where X is half the black mana spent to cast Ungoliant, rounded down.
At the beginning of your upkeep, sacrifice a creature you control. When you sacrifice a spider this way, put a number of +1/+1 counters on Ungoliant equal to the sacrifice creature's power.