Scorched Rusalka, Mikaeus, the Unhallowed, Luminous Broodmoth, and Shambling Ghast

Prerequisites

• Scorched Rusalka on the battlefield
• Mikaeus, the Unhallowed on the battlefield
• Luminous Broodmoth on the battlefield
• Shambling Ghast on the battlefield
• available

Steps

1. Activate Scorched Rusalka by paying and sacrificing Shambling Ghast
2. Shambling Ghast dies, triggering itself, it's undying ability and Luminous Broodmoth
3. Resolve the first Shambling Ghast trigger, creating a Treasure token
4. Resolve the Luminous Broodmoth trigger, returning Shambling Ghast from your graveyard to the battlefield with a flying counter on it
5. Resolve the second Shambling Ghast trigger, failing to return it to the battlefield
6. Resolve the Scorched Rusalka ability from step 1, dealing 1 damage to target player or planeswalker
7. Activate the Treasure token by tapping and sacrificing it, adding
8. Activate Scorched Rusalka by paying and sacrificing Shambling Ghast
9. Shambling Ghast dies, triggering itself and it's undying ability
10. Resolve the first Shambling Ghast trigger, creating a Treasure token
11. Resolve the second Shambling Ghast trigger, returning it from your graveyard to the battlefield with a +1/+1 counter on it
12. Resolve the Scorched Rusalka ability from step 8, dealing 1 damage to target player or planeswalker
13. Activate the Treasure token by tapping and sacrificing it, adding
14. Activate Scorched Rusalka by paying and sacrificing Shambling Ghast
15. Shambling Ghast dies, triggering itself and Luminous Broodmoth
16. Resolve the first Shambling Ghast trigger, creating a Treasure token
17. Resolve the Luminous Broodmoth trigger, returning Shambling Ghast from your graveyard to the battlefield with a flying counter on it
18. Repeat from step 6

Results

• Infinite damage
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers