Roku, Spirit Guide

+2: Add two mana in any combination of colors. Until end of turn, mana doesn't empty from your mana pool as phases end.
0: Create a 4/4 legendary Dragon creature token with deathtouch, haste, and flying named Fang. Exile it at the beginning of your next upkeep.
-9: You get an emblem with, "Spells you cast have cascade. Creatures you control have haste. You may play lands from your graveyard."