Cavalier of Night | Mirror Image | Viscera Seer

Cards

All permanents on the battlefield (
Mirror Image as a copy of
Cavalier of Night).

Activate
Viscera Seer by sacrificing
Mirror Image.
When
Mirror Image dies, its last ability from
Cavalier of Night triggers, returning itself from your graveyard to the battlefield as a copy of
Cavalier of Night.
When
Mirror Image enters the battlefield, its first triggered ability from
Cavalier of Night triggers; choose not to sacrifice a creature.
Resolve the
Viscera Seer ability from step 1.
Repeat.