Puppeteer Clique + Umbral Collar Zealot + Thran Vigil

Puppeteer Clique

Umbral Collar Zealot

Thran Vigil

How it works

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