Narset, Delver of Truths

+1: Sacrifice a Scroll: Add U, R, or W. Activate only once each turn. Target creature you control gains flying and first strike until end of turn.
-2: Create two tapped Scroll tokens.
-6: Narset, Delver of Truths deals X damage to up to three targets and you gain X life, where X is the number of Scrolls you control.