Viscera Seer | Puppeteer Clique

Cards

All permanents on the battlefield (
Puppeteer Clique without a -1/-1 counter on it ).

Activate
Viscera Seer by sacrificing
Puppeteer Clique.
When
Puppeteer Clique dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
Thran Vigil and
Puppeteer Clique trigger.
Resolve the
Thran Vigil trigger, putting a +1/+1 counter on
Puppeteer Clique.
Resolve the
Puppeteer Clique trigger, allowing you to put a creature card from an opponent's graveyard onto the battlefield under your control.
Resolve the
Viscera Seer ability.
Repeat.

Infinite ETB.
Infinite LTB.
Infinite death triggers.
Infinite sacrifice triggers.
Infinite scry 1.
Put all creature cards from each opponent's graveyard onto the battlefield under your control.

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