Primal Monolith

{t} Add {c}
{t}Add 2 mana of any one color. Spend this mana
only to cast multicolored spells.
{2}{t}Add three mana in any combination of
colors. Spend this mana only to cast Angel,
Sphinx, Demon, Dragon, or Beast spells
{4}{t}Sacrifice Primal Monolith, put a legendary permanent from your hand onto the battlefield
under your control