Missy + Carrion Feeder + Horde Ambusher

Missy

Carrion Feeder

Horde Ambusher

How it works

1. Activate Carrion Feeder by sacrificing Horde Ambusher.
2. When Horde Ambusher dies, Missy's first ability triggers, returning Horde Ambusher from your graveyard to the battlefield face down as a 2/2 Cyberman artifact creature.
3. Resolve the Carrion Feeder ability, putting a +1/+1 counter on it.
4. Activate Horde Ambusher's morph ability by revealing a red card from your hand, turning it face up.
5. Repeat.

This elegant loop turns the graveyard into a revolving door by exploiting Missy’s ability to resurrect fallen creatures as face-down Cybermen. By feeding Horde Ambusher to Carrion Feeder, you trigger Missy's revival effect, placing the Ambusher right back onto the battlefield to be recast or turned face up using Horde Ambusher's own morph cost. Because the morph ability lets you continuously flip the Ambusher back to its face-up state, you can endlessly cycle it through the graveyard and repeat the sacrifice loop as many times as you desire.