Activate Altar of Dementia by sacrificing Sun Titan.
When Sun Titan dies, Changing Loyalty triggers, returning Sun Titan from your graveyard to the battlefield.
When Sun Titan enters, it triggers, returning Changing Loyalty from your graveyard to the battlefield attached to Sun Titan.
Resolve the Altar of Dementia ability.
Repeat.

Infinite ETB

Infinite LTB

Infinite death triggers

Infinite mill

Infinite sacrifice triggers

Infinite self-mill

Sun Titan

Altar of Dementia

Changing Loyalty

Activate Umbral Collar Zealot by sacrificing Shepherd of the Cosmos.
When Shepherd of the Cosmos dies, Changing Loyalty triggers, returning Shepherd of the Cosmos from your graveyard to the battlefield.
When Shepherd of the Cosmos enters the battlefield, it triggers, returning Changing Loyalty from your graveyard to the battlefield attached to Shepherd of the Cosmos.
Resolve the Umbral Collar Zealot ability
Repeat.

Infinite surveil

Shepherd of the Cosmos

Umbral Collar Zealot

Activate Viscera Seer by sacrificing Brotherhood Outcast.
When Brotherhood Outcast dies, Changing Loyalty triggers, returning Brotherhood Outcast from your graveyard to the battlefield.
When Brotherhood Outcast enters the battlefield, it triggers, returning Changing Loyalty from your graveyard to the battlefield attached to Brotherhood Outcast.
Resolve the Viscera Seer ability.
Repeat.

Infinite scry 1

Brotherhood Outcast

Viscera Seer

Activate Umbral Collar Zealot by sacrificing Boonweaver Giant
When Boonweaver Giant dies, Changing Loyalty triggers, returning Boonweaver Giant from your graveyard to the battlefield
When Boonweaver Giant enters, it triggers, returning Changing Loyalty from your graveyard to the battlefield attached to Boonweaver Giant.
Resolve the Umbral Collar Zealot ability from step 1.
Repeat.

Boonweaver Giant

Activate Viscera Seer by sacrificing Danitha
When Danitha dies, Changing Loyalty triggers, returning Danitha from your graveyard to the battlefield tapped.
When Danitha enters the battlefield, it triggers, returning Changing Loyalty from your graveyard to the battlefield attached to Danitha.
Resolve the Viscera Seer ability.
Repeat.

Combos with "Changing Loyalty"