Infinite creature LTBInfinite creature ETBInfinite creature sacrifice triggersInfinite death triggersInfinite scry 1Infinite +1/+1 counters on creatures you control
How it works
Activate Woe Strider by sacrificing Puppeteer Clique.
When Puppeteer Clique dies, its persist ability and Szarel trigger.
Resolve the persist trigger, returning Puppeteer Clique from your graveyard to the battlefield with a -1/-1 counter on it.
When Puppeteer Clique enters, it triggers, putting a creature card from an opponent's graveyard onto the battlefield under your control.
Resolve the Szarel trigger, putting a number of +1/+1 counters on another creature you control.
Resolve the Woe Strider ability from step 1.
Activate Woe Strider by sacrificing the creature returned in step 4.
When the creature dies, Szarel triggers, putting a number of +1/+1 counters on Puppeteer Clique.