Rellya, Loveless Wanderer

+2: Rellya deals X damage to any target, where X is the highest mana value among spells you've cast this turn. X cannot be greater than 5.
-5: Draw cards until you draw a card named Allia, Loveless Watcher. Then, put that many cards on top of your library and shuffle your library.
-9: If you both own and control Rellya and Allia, Loveless Watcher, exile them, then meld them into Rellya and Allia, Beloved.