Sylvaina, Xaratios Queen

0: Create X 2/2 Black/Blue Rogue creature tokens. Where X is the number of Blue and Black lands you control plus your devotion to Black and Blue.
+2: Choose One: Cast target non-creature spell from your graveyard; or return target creature card from your graveyard to your hand.
-15: Cast any number of spells from any number of graveyards without paying their mana cost.