Burakos, Party Leader + Haunted One + Relic of Legends + Demon's Disciple + Retribution of the Ancients

Prerequisites

• Burakos does not have a +1/+1 counter on it.

Steps

1. 1Cast Demon's Disciple by paying .
2. 2When Demon's Disciple enters the battlefield, it triggers.
3. 3Holding priority, activate Relic of Legends' second ability by tapping Burakos, adding .
4. 4Burakos triggers, giving it and all creatures you control that share a creature type with it +2/+0 and undying until end of turn.
5. 5Resolve the Demon's Disciple trigger from step 2, causing you to sacrifice Burakos, and each opponent to sacrifice a creature or planeswalker.
6. 6When Burakos dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
7. 7Activate Retribution of the Ancients by paying and removing the +1/+1 counter from Burakos, giving Demon's Disciple -1/-1 until end of turn.
8. 8Demon's Disciple dies as a state-based action due to having 0 toughness, triggering its undying ability, returning it from your graveyard to the battlefield with a +1/+1 counter from it.
9. 9Repeat steps 2 through 6 one additional time.
10. 10Activate Retribution of the Ancients by paying and removing the +1/+1 counter from Burakos and Demon's Disciple, giving Demon's Disciple -2/-2 until end of turn.
11. 11Repeat from step 8.

Effects

• Each opponent sacrifices all creatures they control
• Each opponent sacrifices all planeswalkers they control
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite power for certain creatures until end of turn