Rampaging Monument

Trample
Rampaging Monument enters with three +1/+1 counters on it.
Whenever you cast a multicolored spell, put a +1/+1 counter on Rampaging Monument.

Progenitus

Protection from everything
If Progenitus would be put into a graveyard from anywhere, reveal Progenitus and shuffle it into its owner's library instead.

Firemind Vessel

Firemind Vessel enters tapped.
{T}: Add two mana of different colors.

Manalith

Prismatic Lens

{T}: Add {C}.
{1}, {T}: Add one mana of any color.