Cast Verdant Confluence by paying {4}{G}{G}, choosing its first mode twice targeting Sage of Hours, and any other mode.
Sage of Hours and Feather trigger.
Resolve the Sage of Hours trigger, putting a +1/+1 counter on it.
Resolve the Feather trigger, causing you to exile Verdant Confluence as it resolves.
Resolve Verdant Confluence, putting four +1/+1 counters on Sage of Hours and exiling Verdant Confluence.
Activate Sage of Hours by removing all +1/+1 counters from it, causing you to take at least one extra turn after this one.
At the beginning of your end step, Feather triggers, returning Verdant Confluence from exile to your hand.
Repeat each turn.

Infinite turns

Lock

Feather, the Redeemed

Sage of Hours

Verdant Confluence

Cast Increasing Savagery by paying {2}{G}{G}, targeting Sage of Hours.
Sage of Hours and Feather trigger.
Resolve the Sage of Hours trigger, putting a +1/+1 counter on it.
Resolve the Feather trigger, causing you to exile Increasing Savagery as it resolves.
Resolve Increasing Savagery, putting five +1/+1 counters on Sage of Hours and exiling Increasing Savagery.
Activate Sage of Hours by removing all +1/+1 counters from it, causing you to take at least one extra turn after this one.
At the beginning of your end step, Feather triggers, returning Increasing Savagery from exile to your hand.
Repeat each turn.

Increasing Savagery

Cast Infuse with the Elements by paying {3}{G}, ensuring each mana spent is a different color, targeting Sage of Hours.
Sage of Hours and Feather trigger.
Resolve the Sage of Hours trigger, putting a +1/+1 counter on it.
Resolve the Feather trigger, causing you to exile Infuse with the Elements as it resolves.
Resolve Infuse with the Elements, putting four +1/+1 counters on Sage of Hours and exiling Infuse with the Elements.
Activate Sage of Hours by removing all +1/+1 counters from it, causing you to take at least one extra turn after this one.
At the beginning of your end step, Feather triggers, returning Infuse with the Elements from exile to your hand.
Repeat each turn.

Infuse with the Elements

Cast Strength of the Tajuru by paying {4}{G}{G}, targeting Sage of Hours.
Sage of Hours and Feather trigger.
Resolve the Sage of Hours trigger, putting a +1/+1 counter on it.
Resolve the Feather trigger, causing you to exile Strength of the Tajuru as it resolves.
Resolve Strength of the Tajuru, putting four +1/+1 counters on Sage of Hours and exiling Strength of the Tajuru.
Activate Sage of Hours by removing all +1/+1 counters from it, causing you to take at least one extra turn after this one.
At the beginning of your end step, Feather triggers, returning Strength of the Tajuru from exile to your hand.
Repeat each turn.

Combos with "Feather, the Redeemed"