Cora, Recaster of Reality

Shroud
{1}: Until the end of turn, all permanents become
the color of mana spent to activate this ability in
addition to their other colors, and all lands can
tap to produce that color mana.
If Cora, Recaster of Reality is your commander,
your deck can contain cards of any color.
"No no Ucky noo-noo bye bye"