Yannik, Scavenging Sentinel + Sage of Hours + Conjurer's Closet

Yannik, Scavenging Sentinel

Sage of Hours

Conjurer's Closet

How it works

1. At the beginning of your end step, Conjurer's Closet triggers, blinking Yannik.
2. Yannik leaves the battlefield, causing any permanents exiled by it to re-enter the battlefield under their owner's control.
3. Yannik enters the battlefield, exiling a nontoken creature you control with power five or greater until Yannik leaves the battlefield, and putting at least five +1/+1 counters on Sage of Hours.
4. Activate Sage of Hours by removing all +1/+1 counters from it, causing you to take at least one extra turn after this one.
5. Repeat each turn.