Tidespout Tyrant + Sol Ring

Tidespout Tyrant

Sol Ring

How it works

1. Cast Sol Ring 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 Sol Ring by tapping it, adding CC.
4. Cast the nontoken permanent returned in step 2 by paying its mana cost.
5. Tidespout Tyrant triggers, returning Sol Ring from the battlefield to your hand.
6. Repeat.