Tahn, Enlightened Giraffe

+2: Target creature gains vigilance until end of turn. Gain 1 life.
-5: Tap target creature, it gains lifelink and vigilance. Exile target card from an opponents hand, you gain life equal to its converted mana cost.
-8: Search your library for Gideon of the Trials, and put it onto the battlefield under your control. Gain 3 life.