Amihiyela, Lady of the Surge

Mana Whirl {u}{b} (When this creature leaves the battlefield, you may add {u}{b} to your mana pool)
"A striking resume, only 500 years old, but she already created a world, destroyed 2, mastered the art of the manaspike, fell in love and eavesdropped on an emperor of half the universe. And you bet she is adding to that list as we speak"