Damastora, Tempest Golem

Eminence- As long as this card is in the command zone or on the battlefield, during your turn the first nonland spell you cast has Cascade.
Colourful- If you spent more than blue, black and red mana to cast this spell, other creatures you control have chromawalk.
Chromawalk (This creature can't be blocked as long as defending player controls an Island, Swamp, or a Mountain.)