Nim Deathmantle + Ashnod's Altar + Knight of Sorrows

Prerequisites

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Steps

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

Effects

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers