Ashling, the Limitless, Catalyst Elemental, Grave Sifter, and Centaur Omenreader

Prerequisites

• Ashling, the Limitless on the battlefield
• Catalyst Elemental in the graveyard
• Grave Sifter in hand
• Centaur Omenreader on the battlefield

Steps

1. Cast Grave Sifter for its evoke cost by paying due to Centaur Omenreader
2. When Grave Sifter enters, its first ability and evoke abilities trigger
3. Resolve the first trigger, returning Catalyst Elemental from your graveyard to your hand
4. Resolve the second trigger, sacrificing Grave Sifter
5. When Grave Sifter dies, Ashling triggers, creating a token copy of Grave Sifter with haste
6. When the Grave Sifter token enters, it triggers, returning Grave Sifter from your graveyard to your hand
7. Cast Catalyst Elemental by paying due to Centaur Omenreader
8. Activate Catalyst Elemental by sacrificing it, adding
9. When Catalyst Elemental dies, Ashling triggers, creating a token copy of Catalyst Elemental with haste
10. Activate the Catalyst Elemental token by sacrificing it, adding
11. Repeat

Results

• Each opponent returns all creature cards from their graveyard to their hand
• Infinite ETB
• Infinite LTB
• Infinite creature tokens with haste
• Infinite death triggers
• Infinite red mana
• Infinite sacrifice triggers
• Infinite storm count