Alita, Angel of Power

Hexproof.
When Alita, Angel of Power deals damage, draw that many cards, and add that much mana of any color to your mana pool. Until end of turn, you don't lose this mana as steps and phases end.
Discard a card: Exile this creature. Then return Altia, Battle Angel to the battlefield and return Cyborg Body, Imaginos to your hand
at the beginning of the next endstep.