Rings of Brighthearth + Deserted Temple + Nykthos, Shrine to Nyx

Rings of Brighthearth

Deserted Temple

Nykthos, Shrine to Nyx

How it works

1. Activate Nykthos, Shrine to Nyx by paying 2 and tapping it, adding at least 6
2. Activate Deserted Temple's second ability by paying 1 and tapping it, targeting Nykthos, Shrine to Nyx.
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 Nykthos, Shrine to Nyx
5. Repeat