Adagia, Windswept Bastion + Treachery + Rakdos Carnarium

Adagia, Windswept Bastion

Treachery

Rakdos Carnarium

How it works

1. Activate Rakdos Carnarium 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, Rakdos Carnarium and up to three other lands.
5. Repeat.

This intricate loop turns the cloning power of Adagia, Windswept Bastion into a devastating engine of untap triggers, fueled by the lands you control like Rakdos Carnarium. By using your mana to repeatedly copy Treachery, you force the newly created token to enter the battlefield and untap Adagia along with your other lands. Because the token is legendary, the state-based legend rule immediately puts it into your graveyard, neatly clearing the way for you to spend your newly untrapped resources and do it all over again.