Knot-Saron, Father of Death

Emerge {x}{r}{r}. X cant be {0}.

If a red or colorless source you control would deal excess damage to a creature, exile it. Then make a treasure token.

Sacrifice {x} treasure tokens: Choose one-

•Gain control of target creature with mana cost {x} or less until your next upkeep, it gains haste.

•You may cast a spell with mana cost {x} or less you don't own exiled with Knot-Saron, Father of Death.