Codie, Vociferous Codex + Aura Finesse + Freed from the Real

Codie, Vociferous Codex

Aura Finesse

Freed from the Real

How it works

1. Cast Aura Finesse by paying , attaching the Aura to Codie and drawing a card (this is necessary because Codie's ability forces you to cast the Aura before Codie is on the battlefield).
2. Activate Codie by paying 4 and tapping it, adding .
3. Activate the Aura by paying , untapping Codie.
4. Repeat from step 2 any number of times, skipping step 3 on the final iteration.
5. Once you have an arbitrarily large number of Codie triggers, cast any spell by paying its mana cost, reduced by the added in step 2.
6. Codie triggers for each time you activated its ability.
7. 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.
8. Repeat step 7 for each remaining trigger.
9. You may also repeat this combo for each instant and/or sorcery card in your hand as mana permits, and on subsequent turns.

This elegant loop turns Codie, Vociferous Codex into a massive cascade engine by leaning on Freed from the Real to untap it endlessly, generating a windfall of five-color mana in the process. Because Codie's restriction prevents you from casting permanent spells, Aura Finesse plays a crucial opening role by attaching itself to the Codex while replacing itself with a drawn card. With the enchanting aura in place, every untap from Freed from the Real lets you tap Codie over and over to stack up a mountain of delayed cascade triggers, eventually letting you rip through your library to cast your entire instant and sorcery collection for free.