Mortuary + Umbral Collar Zealot + Kobolds of Kher Keep + Gwenom, Remorseless

Mortuary

Umbral Collar Zealot

Kobolds of Kher Keep

Gwenom, Remorseless

How it works

1. Activate Umbral Collar Zealot by sacrificing Kobolds of Kher Keep
2. When Kobolds of Kher Keep dies, Mortuary triggers, putting Kobolds of Kher Keep from your graveyard onto the top of your library.
3. Resolve the Umbral Collar Zealot ability.
4. Cast Kobolds of Kher Keep from the top of your library by paying 0 life.
5. Repeat.

This loop turns a tiny token into a perpetual engine by pairing Mortuary with Umbral Collar Zealot's ability to sacrifice permanents and surveil the top of your deck. When you feed Kobolds of Kher Keep to the Zealot, Mortuary immediately catches it on its way to the graveyard and places it right back on top of your library. From there, Gwenom, Remorseless grants you the crucial ability to play that very same zero-mana creature straight off the top of your library by paying life instead of mana, priming the board to repeat the cycle endlessly.