Towering Titan is a mythic Creature — Giant card from Tarkir: Dragonstorm Commander (TDC), collector number 276. Current market price: $0.34, TCGplayer market prices via Scryfall.
This creature enters with X +1/+1 counters on it, where X is the total toughness of other creatures you control. Sacrifice a creature with defender: All creatures gain trample until end of turn.