Codie, Vociferous Codex + Rakdos, Lord of Riots + Lampad of Death's Vigil + Fervor

Codie, Vociferous Codex

Rakdos, Lord of Riots

Lampad of Death's Vigil

Fervor

How it works

1. Activate Codie by paying 4 and tapping it, adding .
2. Activate Lampad of Death's Vigil by paying 1 and sacrificing Codie.
3. Choose to return Codie to the command zone from your graveyard.
4. Resolve the Lampad of Death's Vigil trigger, causing each opponent to lose 1 life and you to gain 1 life.
5. Cast Codie from the command zone by paying 0 due to Rakdos.
6. Repeat.
7. NOTE: This combo ends once you have one opponent remaining, as the lifeloss from Lampad of Death's Vigil no longer covers Codie's increased commander tax.
8. However, you may be able to get more iterations if you started the combo with three or more opponents, as Rakdos will decrease Codie's cost by 3, outpacing the 2 from commander tax, until you have two or less opponents.
9. Once you have a large number of Codie triggers, you may cast any instant or sorcery by paying its mana cost.
10. Codie triggers for each time you activated its ability.
11. Resolve the first trigger, causing you to exile cards from the top of your library until you exile an instant or sorcery spell with lesser mana value, and allowing you to cast that spell without paying its mana cost.
12. Repeat step 11 for each remaining trigger.

This mesmerizing loop turns your commander into a self-sacrificing engine by letting Rakdos, Lord of Riots completely erase its mana cost once an opponent has lost life. With Fervor granting immediate haste and Lampad of Death's Vigil standing ready to sacrifice Codie, Vociferous Codex for a single mana, you can continually funnel life loss into recasting Codie from the command zone. Each cycle fuels a mountain of death and sacrifice triggers while stacking up a ridiculous number of Codie cascade-style triggers, which you can later cash in to cast your entire library of instant and sorcery spells for free.