Activate Codie by paying {4} and tapping it, adding {W}{U}{B}{R}{G}.
Activate Lampad of Death's Vigil by paying {1} and sacrificing Codie.
Choose to return Codie to the command zone from your graveyard.
Resolve the Lampad of Death's Vigil trigger, causing each opponent to lose 1 life and you to gain 1 life.
Cast Codie from the command zone by paying {0} due to Rakdos.
Repeat.
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.
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.
 Once you have a large number of Codie triggers, you may cast any instant or sorcery by paying its mana cost.
Codie triggers for each time you activated its ability.
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.
Repeat step 11 for each remaining trigger.


Near-infinite death triggers

Near-infinite creature ETB

Near-infinite lifegain

Near-infinite lifegain triggers

Near-infinite lifeloss

Near-infinite creature LTB

Near-infinite creature sacrifice triggers

Near-infinite storm count

Codie, Vociferous Codex

Rakdos, Lord of Riots

Lampad of Death's Vigil

Concordant Crossroads

Fervor

Mass Hysteria

Urabrask the Hidden

Cast First Day of Class by paying {1}{R}.
Activate Codie by paying {4} and tapping it, adding {W}{U}{B}{R}{G}.
Activate Lampad of Death's Vigil by paying {1} and sacrificing Codie.
Choose to return Codie to the command zone from your graveyard.
Resolve the Lampad of Death's Vigil trigger, causing each opponent to lose 1 life and you to gain 1 life.
Cast Codie from the command zone by paying {0} due to Rakdos.
First Day of Class triggers, putting a +1/+1 counter on Codie and giving it haste.
Repeat from step 2.
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.
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.
Once you have a large number of Codie triggers, you may cast any instant or sorcery by paying its mana cost.
Codie triggers for each time you activated its ability.
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.
Repeat step 13 for each remaining trigger.


First Day of Class

Combos with "Lampad of Death's Vigil"