Thrall Deathseer

+1: For each multicolored creature you control, add one mana of it's color identity to your mana pool.
-2: Target creature gains +X/0 or +0/+X until the end of the turn, where X is equal to it's converted mana cost.
-10: You recieve an Emblem "Creatures you control enter the battlefield with X +1/+1 counters on them, where X is their converted mana cost +1