The Prismancer

The Prismancer has Indestructible, Hexproof,
Menace, Double Strike and Trample as long
as there are five colours among other
permanents you control.
{w}{u}{b}{r}{g}: Choose a colour. All cards that aren't
on the battlefield, spells, and permanents are the
chosen colour in addition to their other colours
until your next turn.
{5}, {t}: Add five mana in any arrangement of
colours.