Extraction Specialist + Leonin Relic-Warder + Biotransference + Phyrexian Altar

Prerequisites

• You have at least 2 life.

Steps

1. 1Cast Leonin Relic-Warder by paying .
2. 2Biotransference triggers, causing you to lose 1 life and create a 2/2 Necron Warrior token.
3. 3Leonin Relic-Warder's ETB ability triggers, exiling Extraction Specialist.
4. 4Activate Phyrexian Altar by sacrificing Leonin Relic-Warder, adding one mana of any color.
5. 5Leonin Relic-Warder's LTB ability triggers, returning Extraction Specialist from exile to the battlefield.
6. 6Extraction Specialist enters the battlefield, returning Leonin Relic-Warder from your graveyard to the battlefield.
7. 7Repeat from step 3.

Effects

• Infinite artifact ETB
• Infinite artifact LTB
• Infinite colored mana
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers