Mana Crypt + Tidespout Tyrant

U identity

The 2 combo pieces

What must be in place

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

How to execute it

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

What the combo produces