Muldrotha, the Gravetide, Kaya's Ghostform, Ashnod's Altar, and Gleaming Barrier

Prerequisites

• Muldrotha, the Gravetide on the battlefield
• Kaya's Ghostform on the battlefield
• Ashnod's Altar on the battlefield
• Gleaming Barrier on the battlefield
• Kaya's Ghostform attached to Muldrotha

Steps

1. Activate Ashnod's Altar by sacrificing Gleaming Barrier, adding
2. Gleaming Barrier triggers, creating a Treasure token
3. Activate Ashnod's Altar by sacrificing Muldrotha, adding
4. Kaya's Ghostform triggers, returning Muldrotha to the battlefield
5. Activate a Treasure token by tapping and sacrificing it, adding
6. Cast Kaya's Ghostform from your graveyard by paying , targeting Muldrotha
7. Cast Gleaming Barrier from your graveyard by paying
8. Repeat any number of times
9. Once you have infinite colorless mana, you may cast Gleaming Barrier twice each loop instead of only once, choosing "artifact" for Muldrotha purposes one time and "creature" the other time, resulting in infinite Treasure tokens

Results

• Cast all permanent cards in your graveyard
• Infinite colored mana
• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite Treasure tokens