The Rebellious Intelligence

Legendary Artifact Creature — Rebel

At the beginning of your upkeep, put a random card from outside the game into your hand. (In Commander sealed, that's everything you didn't play with. In any other commander game, find a way to select a random Magic card.) {T} : Add {W} {U} {B} {R} {G} . This mana can't be spent to pay generic mana costs.