Obeka, Brute Chronologist + Exalted Flamer of Tzeentch + Last Chance

Prerequisites

You have no instants and/or sorceries in your graveyard.

Steps

1. Cast Last Chance by paying {R}{R}.
2. Exalted Flamer of Tzeentch's second ability triggers, dealing 1 damage to each opponent.
3. Resolve Last Chance, causing you to take an extra turn after this one.
4. Move to your extra turn.
5. At the beginning of your upkeep, Exalted Flamer of Tzeentch's first ability triggers, returning Last Chance from your graveyard to your hand.
6. Repeat steps 1-3 one additional time.
7. At the beginning of your end step, Last Chance triggers.
8. Holding priority, activate Obeka by tapping it, ending the turn and exiling the Last Chance trigger from the stack.
9. Repeat from step 4.