Éomer, Marshal of Rohan + Kari Zev, Skyship Raider + Nim Deathmantle + Ashnod's Altar

Éomer, Marshal of Rohan

Kari Zev, Skyship Raider

Nim Deathmantle

Ashnod's Altar

How it works

1. Declare Kari Zev as an attacker.
2. Kari Zev triggers, creating a legendary 2/1 Ragavan creature token that is tapped and attacking.
3. Holding priority, activate Ashnod's Altar by sacrificing Ragavan, adding CC.
4. When Ragavan dies, Éomer triggers, untapping all creatures you control and causing you to get an additional combat phase after this one.
5. Activate Ashnod's Altar by sacrificing Éomer, adding CC.
6. When Éomer dies, Nim Deathmantle triggers, causing you to pay 4 to return Éomer from your graveyard to the battlefield, and attach Nim Deathmantle to it.
7. Repeat each combat phase.