Grim Monolith + Tidespout Tyrant

Mana needed: {2}

U identity

Commander legal

The 2 combo pieces

What must be in place

You control a nontoken permanent that can be cast using {C}.

How to execute it

  1. Cast Grim Monolith by paying its mana cost.
  2. Tidespout Tyrant triggers, returning a nontoken permanent that can be cast using {C} from the battlefield to your hand.
  3. Activate Grim Monolith by tapping it, adding {C}{C}{C}.
  4. Cast the nontoken permanent returned in step 2 by paying its mana cost.
  5. Tidespout Tyrant triggers, returning Grim Monolith from the battlefield to your hand.
  6. Repeat.

What the combo produces