Ashling, the Limitless, Catalyst Elemental, Greenwarden of Murasa, and Semblance Anvil

Prerequisites

• Ashling, the Limitless on the battlefield
• Catalyst Elemental in the graveyard
• Greenwarden of Murasa in hand
• Semblance Anvil on the battlefield

Steps

1. Cast Greenwarden of Murasa for its evoke cost by paying due to Semblance Anvil
2. When Greenwarden of Murasa 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 Greenwarden of Murasa
5. When Greenwarden of Murasa dies, Ashling triggers, creating a token copy of Greenwarden of Murasa with haste
6. When the Greenwarden of Murasa token enters, it triggers, returning Greenwarden of Murasa from your graveyard to your hand
7. Cast Catalyst Elemental by paying due to Semblance Anvil
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

• Infinite ETB
• Infinite LTB
• Infinite creature tokens with haste
• Infinite death triggers
• Infinite red mana
• Infinite sacrifice triggers
• Infinite storm count