Nethroi, Apex of Death + Phyrexian Altar + Mitotic Slime + Nurturing Pixie

Nethroi, Apex of Death

Phyrexian Altar

Mitotic Slime

Nurturing Pixie

How it works

1. Cast Nethroi either from your hand or from the command zone for its mutate cost by paying 4G/W, putting it under a non-Human creature you control.
2. Nethroi triggers, returning Nurturing Pixie and Mitotic Slime from your graveyard to the battlefield.
3. When Nurturing Pixie enters, it triggers, returning Nethroi from the battlefield to your hand.
4. Activate Phyrexian Altar twice by sacrificing Nurturing Pixie and Mitotic Slime, adding .
5. When Mitotic Slime dies, it triggers, creating two 2/2 Ooze creature tokens.
6. Activate Phyrexian Altar twice by sacrificing the Oozes, adding 1G/W.
7. When the Oozes die, they trigger, creating four 1/1 Ooze creature tokens.
8. Activate Phyrexian Altar three times by sacrificing three Oozes, adding 3.
9. Repeat.

This intricate recursion loop uses Nethroi, Apex of Death's explosive mutate trigger to pull both Nurturing Pixie and Mitotic Slime straight from your graveyard to the battlefield simultaneously. As Nurturing Pixie enters, its ability bounces Nethroi back to your hand, allowing you to cast it over and over again, while Phyrexian Altar acts as the ultimate engine to sacrifice every resulting piece for mana. Meanwhile, Mitotic Slime ensures a cascading supply of sacrificial fodder by splitting into 2/2 and then 1/1 Ooze tokens upon death, fueling an endless loop of sacrifices and triggers.