Adagia, Windswept Bastion + Treachery + Coral Atoll

Adagia, Windswept Bastion

Treachery

Coral Atoll

How it works

1. Activate Coral Atoll and up to three other lands by tapping them, adding at least 4.
2. Activate Adagia by paying 3 and tapping it, creating a token copy of Treachery that is legendary attached to any creature.
3. If you control two legendary Treachery permanents, put one into your graveyard due to the legend rule.
4. The Treachery token's enter-the-battlefield ability triggers, untapping Adagia, Coral Atoll and up to three other lands.
5. Repeat.

This clever loop centers around Adagia, Windswept Bastion and its expensive ability to replicate artifacts and enchantments, which we fuel using Coral Atoll's ability to tap for multiple mana. By targeting Treachery with Adagia, Windswept Bastion's token creation, the resulting copy enters the battlefield and triggers its own entry ability to untap both of our lands alongside several others. Since the legend rule immediately takes care of any duplicate copies of Treachery, we can continuously recast or recreate the Aura, recycling those land untaps to generate infinite mana of every color our lands can produce.