Doomed Necromancer + Gixian Puppeteer + Phyrexian Altar + Urabrask the Hidden

Prerequisites

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Steps

1. 1Activate Phyrexian Altar by sacrificing Gixian Puppeteer, adding .
2. 2When Gixian Puppeteer dies, its second ability triggers, returning Doomed Necromancer from your graveyard to the battlefield.
3. 3Activate Doomed Necromancer by paying , tapping and sacrificing it, returning Gixian Puppeteer from your graveyard to the battlefield.
4. 4Repeat.

Effects

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