Changeling Berserker, Fiend Hunter, and Changeling Titan

Prerequisites

• Changeling Berserker in hand or on the battlefield or in exile
• Fiend Hunter in hand or on the battlefield or in exile
• Changeling Titan in hand or on the battlefield or in exile
• plus the mana cost of the creature in your hand available

Steps

1. Cast Changeling Berserker for its mana cost
2. When Changeling Berserker enters, it exiles Fiend Hunter until Changeling Berserker leaves the battlefield
3. Resolve any additional effects of Changeling Berserker's ETB
4. When Fiend Hunter leaves the battlefield, Changeling Titan is returned from exile to the battlefield
5. When Changeling Titan enters, it exiles Changeling Berserker until Changeling Titan leaves the battlefield
6. Resolve any additional effects of Changeling Titan's ETB
7. When Changeling Berserker leaves the battlefield, Fiend Hunter is returned from exile to the battlefield
8. When Fiend Hunter enters, it exiles Changeling Titan until Fiend Hunter leaves the battlefield
9. Resolve any additional effects of Fiend Hunter's ETB
10. When Changeling Titan leaves the battlefield, Changeling Berserker is returned from exile to the battlefield
11. Repeat from step 2

Results

• Infinite creature ETB
• Infinite creature LTB