This elegant little loop turns Aerie Ouphes into a relentless artillery piece, fueled entirely by the static blessing of Renata, Called to the Hunt. Normally, persist would bring Aerie Ouphes back with a -1/-1 counter that permanently shuts the loop down, but Renata's passive counter-buff counteracts this by granting an additional +1/+1 counter instead; through the rules of counter annihilation, the +1/+1 and -1/-1 counters cancel each other out entirely. This leaves the Ouphes completely clean of counters upon re-entry, allowing you to sacrifice it over and over again to rack up infinite sacrifices, enters-the-battlefield triggers, and a devastating stream of damage.