Ayara's Oathsworn + Nexus of Fate + Fain, the Broker

Ayara's Oathsworn

Nexus of Fate

Fain, the Broker

How it works

1. Deal combat damage to an opponent using Ayara's Oathsworn.
2. Ayara's Oathsworn triggers, putting a +1/+1 counter on it and searching your library for Nexus of Fate and putting it into your hand.
3. Activate Fain's second ability by tapping it and removing a +1/+1 counter from Ayara's Oathsworn, creating a Treasure token.
4. Activate the Treasure by tapping and sacrificing it, adding .
5. Cast Nexus of Fate by paying 5, causing you to take an extra turn after this one, and shuffle Nexus of Fate into your library.
6. Repeat each turn.