Color Identity: U

Initial Card State
- All permanents on the battlefield.
Mana Needed
- ({3} magic symbol)
({U} magic symbol)
each turn available.
Steps
- Activate Magosi's second ability by paying ({U} magic symbol)
and tapping it. - Rings of Brighthearth triggers, choose not to pay.
- Resolve the Magosi ability, putting an eon counter on it and causing you to skip your next turn.
- Activate Deserted Temple's second ability by paying ({1} magic symbol)
and tapping it, untapping Magosi. - Activate Magosi's third ability by tapping it, removing an eon counter from it and returning it from the battlefield to your hand.
- Rings of Brighthearth triggers, causing you to pay ({2} magic symbol)
to copy Magosi's ability. - Resolve both Magosi abilities, causing you to take two extra turns after this one.
- Play Magosi.
- Move to your first extra turn, which is skipped due to Magosi's ability which resolved in step 3.
- Move to your second extra turn.
- Repeat.
Bracket Tag
This combo has been estimated to be Ruthless (Bracket 4+).