Kael, Bringer of Neutrality

All permanents have devoid. (They have no color.)
Colored spells cost {c} more to cast
Colorless spells cost {1} less to cast.
At the beginning of your upkeep, name a basic land type other than Wastes. Until your next turn, permanents with that basic land type lose all abilities and gain "{t}: Add {c} or one mana of any color."