Keljiin, Shuuntary Master

Companion — Your deck can't have other creatures with the same or greater converted mana cost (If this card is your chosen companion, you may cast it once from outside the game)
{r/g}{g/u}{u/r}, {t}: Create a token copy of target creature with converted mana cost 2 or less. When you do, you may mutate it with another creature
In Shuuntar, all are subservient to him, and under his rei