Reveillark | Body Double | Altar of Dementia

Cards

Reveillark in your graveyard.
Body Double and
Altar of Dementia on the battlefield (
Body Double as a copy of
Reveillark).

Activate
Altar of Dementia by sacrificing
Body Double.
When
Body Double leaves the battlefield, it triggers its
Reveillark ability, returning itself from your graveyard to the battlefield as a copy of
Reveillark.
Resolve the
Altar of Dementia ability.
Repeat.

This combo has been estimated to be Exhibition (Bracket 1+).