Cavalier of Night + Mirror Image + Viscera Seer

Cavalier of Night

Mirror Image

Viscera Seer

How it works

1. Activate Viscera Seer by sacrificing Mirror Image.
2. 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.
3. When Mirror Image enters the battlefield, its first triggered ability from Cavalier of Night triggers; choose not to sacrifice a creature.
4. Resolve the Viscera Seer ability from step 1.
5. Repeat.