Carmen, Cruel Skymarcher + Leonin Relic-Warder + All-Out Assault + Carrion Feeder

Prerequisites

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Steps

1. 1Cast All-Out Assault by paying .
2. 2When All-Out Assault enters the battlefield, it triggers, causing you to get an additional combat and main phase after this one.
3. 3Move to your extra combat phase. All-Out Assault triggers, untapping each creature you control.
4. 4Declare Carmen as an attacker, triggering its second ability, returning Leonin Relic-Warder form your graveyard to the battlefield.
5. 5When Leonin Relic-Warder enters the battlefield, its first ability triggers, exiling All-Out Assault.
6. 6Move to your postcombat main phase, and activate Carrion Feeder by sacrificing Leonin Relic-Warder.
7. 7When Leonin Relic-Warder dies, its second ability and Carmen's first ability trigger.
8. 8Resolve the Carmen trigger, putting a +1/+1 counter on it and causing you to gain 1 life.
9. 9Resolve the Leonin Relic-Warder trigger, returning All-Out Assault from exile to the battlefield.
10. 10When All-Out Assault enters the battlefield, it triggers, causing you to get an additional combat and main phase after this one.
11. 11Resolve the Carrion Feeder ability.
12. 12Repeat from step 3.

Effects

• Infinite +1/+1 counters on a creature
• Infinite combat phases
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite lifegain
• Infinite lifegain triggers
• Infinite mana creatures you control can produce
• Infinite untap of creatures you control