Brago, King Eternal + Sage of Hours + Cathars' Crusade

Brago, King Eternal

Sage of Hours

Cathars' Crusade

How it works

1. Deal combat damage with Brago.
2. Brago triggers, blinking at least five creatures.
3. Cathars' Crusade triggers for each creature that enters the battlefield.
4. Resolve the first Cathars' Crusade trigger, putting a +1/+1 counter on each creature you control.
5. Repeat step 4 for each remaining trigger.
6. Activate Sage of Hours' ability by removing all +1/+1 counters from it, causing you to take at least one extra turn after this one.
7. Repeat.