Adagia, Windswept Bastion + Treachery + Selesnya Sanctuary

Adagia, Windswept Bastion

Treachery

Selesnya Sanctuary

How it works

1. Activate Selesnya Sanctuary 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, Selesnya Sanctuary and up to three other lands.
5. Repeat.

This looping engine harnesses the unique properties of Adagia, Windswept Bastion alongside the classic Aura Treachery and the bounce-and-mana utility of Selesnya Sanctuary. By leveraging Adagia, Windswept Bastion's high-threshold station ability—fueled by the mana generated across your tapped lands—you repeatedly manufacture a legendary copy of Treachery. Each time this copied Treachery enters the battlefield, its triggered ability untaps Selesnya Sanctuary and your other lands, resetting your mana supply to fuel the next iteration.