Mystic Sanctuary + Dust Bowl + Perennial Behemoth + Walk the Aeons

Mystic Sanctuary

Dust Bowl

Perennial Behemoth

Walk the Aeons

How it works

1. Cast Walk the Aeons by paying its mana cost, causing you to take an extra turn after this one.
2. Activate Dust Bowl by paying 3, tapping it and sacrificing Mystic Sanctuary, destroying a nonbasic land.
3. Play Mystic Sanctuary from your graveyard.
4. When Mystic Sanctuary enters untapped, it triggers, putting Walk the Aeons from your graveyard onto the top of your library.
5. Move to your next turn, drawing Walk the Aeons during your draw step.
6. Repeat.

This loop achieves near-infinite turns by leveraging Perennial Behemoth's static ability to play lands directly from your graveyard, allowing you to continually redeploy Mystic Sanctuary. Each time Mystic Sanctuary enters the battlefield untapped, its triggered ability recycles Walk the Aeons from your graveyard to the top of your library so you can draw and cast it again on your extra turn. Meanwhile, Dust Bowl plays a crucial utility role by sacrificing Mystic Sanctuary to clear away a nonbasic land, sending the land right back into the graveyard where Perennial Behemoth can pick it up once more.