Rings of Brighthearth + Deserted Temple + Scorched Ruins

Rings of Brighthearth

Deserted Temple

Scorched Ruins

How it works

1. Activate Scorched Ruins by tapping it, adding CCCC.
2. Activate Deserted Temple's second ability by paying 1 and tapping it, targeting Scorched Ruins.
3. Rings of Brighthearth triggers, causing you to pay 2 to copy Deserted Temple's ability, targeting Deserted Temple.
4. Resolve both Deserted Temple abilities, untapping Deserted Temple and Scorched Ruins.
5. Repeat an arbitrarily large number of times.
6. Once you have a large amount of C, you may untap any other lands you control in place of Scorched Ruins.