Electro, Assaulting Battery{1}{R}{R}
Legendary Creature — Human Villain
Flying
You don't lose unspent red mana as steps and phases end.
Whenever you cast an instant or sorcery spell, add {R}.
When Electro leaves the battlefield, you may pay {X}. When you do, he deals X damage to target player.
2/3
Illustrated By Piotr Dura