Nim Deathmantle + Phyrexian Altar + Eyeblight Cullers

Nim Deathmantle

Phyrexian Altar

Eyeblight Cullers

How it works

1. Activate Phyrexian Altar by sacrificing Eyeblight Cullers, adding 1.
2. When Eyeblight Cullers dies, it and Nim Deathmantle triggers.
3. Resolve the Eyeblight Cullers trigger, creating three 1/1 Elf Warrior creature tokens.
4. Activate Phyrexian Altar by sacrificing the Elf Warriors, adding 3.
5. Resolve the Nim Deathmantle trigger from step 2, causing you to pay 4 to return Eyeblight Cullers from your graveyard to the battlefield, and attach Nim Deathmantle to it.
6. Repeat.