Yore-Tiller Nephilim + Medomai the Ageless + Ashnod's Altar

Yore-Tiller Nephilim

Medomai the Ageless

Ashnod's Altar

How it works

1. Declare Yore-Tiller Nephilim as an attacker.
2. Yore-Tiller Nephilim triggers, returning Medomai from your graveyard to the battlefield tapped and attacking.
3. Deal combat damage using Medomai, triggering its ability, causing you to take an extra turn after this one.
4. Activate Ashnod's Altar by sacrificing Medomai.
5. Repeat each turn.