Neheb, Dreadhorde Champion + Hellkite Charger + Ulamog, the Infinite Gyre

Neheb, Dreadhorde Champion

Hellkite Charger

Ulamog, the Infinite Gyre

How it works

1. Attack with Neheb and Hellkite Charger.
2. Hellkite Charger triggers.
3. Pay 5 to the trigger, gaining an extra combat phase and untapping all creatures you control.
4. Neheb deals combat damage, triggering.
5. With Neheb trigger, discard 7 cards and draw 7 cards, discards Ulamog when able, adding .
6. End combat.
7. Repeat.