Decaying Soil + Phyrexian Altar + Crimson Kobolds

Decaying Soil

Phyrexian Altar

Crimson Kobolds

How it works

1. Cast Crimson Kobolds by paying 0.
2. Activate Phyrexian Altar by sacrificing Crimson Kobolds, adding 1.
3. When Crimson Kobolds dies, Decaying Soil triggers, causing you to pay 1 to return Crimson Kobolds to your hand from your graveyard.
4. Repeat.

This clever loop relies on Crimson Kobolds's completely free casting cost to fuel Phyrexian Altar for a mana of any color, sending the Kobold straight to the graveyard. Once your graveyard hits the threshold of seven or more cards, Decaying Soil grants you the vital passive ability to buy that creature right back into your hand for the exact single mana you just generated. By endlessly recasting, sacrificing, and returning your tiny red friends, you generate infinite storm count, death triggers, and sacrifice loops without ever running out of resources.