Olivia, Crimson Bride + Medomai the Ageless + Ashnod's Altar

Olivia, Crimson Bride

Medomai the Ageless

Ashnod's Altar

How it works

1. Declare Olivia as an attacker, attacking an opponent unable to block your creatures.
2. Olivia triggers, returning Medomai from your graveyard to the battlefield tapped and attacking that opponent.
3. Deal combat damage with Medomai, triggering its ability, causing you to take an extra turn after this one.
4. Activate Ashnod's Altar by sacrificing Medomai, adding CC.
5. Repeat.