Abdel Adrian, Gorion's Ward, Changeling Titan, and Mardu Siegebreaker

Prerequisites

• Abdel Adrian, Gorion's Ward in hand or on the battlefield or in exile
• Changeling Titan in hand or on the battlefield or in exile
• Mardu Siegebreaker in hand or on the battlefield or in exile
• plus the mana cost of the creature in your hand available

Steps

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

Results

• Infinite blinking of nonland permanents
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature tokens