Essence Gem

{t}: Add {w}{u}{b}{r}{g}{c} to your mana pool.
{5}{t}: Choose two colors. Add one hundred mana to your mana pool in any combination of the chosen colors.
{x}{c}{c}, Sacrifice Essence Gem: Put X 3/3 Golem artifact creature tokens into play under your control with Haste and Intimidate.
The essence of the Multiverse burns bright and volatile within the gem. Waiting to burst forth.