Nim Deathmantle, Ashnod's Altar, and Ministrant of Obligation

Prerequisites

• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• Ministrant of Obligation on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Ministrant of Obligation, adding
2. When Ministrant of Obligation dies, its afterlife ability and Nim Deathmantle trigger
3. Resolve the Ministrant of Obligation trigger, creating two 1/1 Spirit creature tokens
4. Activate Ashnod's Altar by sacrificing a Spirit, adding
5. Resolve the Nim Deathmantle trigger from step 2, causing you to pay to return Ministrant of Obligation from your graveyard to the battlefield, and attach Nim Deathmantle to it
6. Repeat

Results

• Infinite colorless mana
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers