Mikaeus, the Unhallowed + Ashnod's Altar + Dread Tiller
Produces: Infinite ETB, Infinite LTB, Infinite colorless mana, Infinite death triggers, Infinite sacrifice triggers
- Mikaeus, the Unhallowed
- Ashnod's Altar
- Dread Tiller
- Color identity
- BG
Steps
- Activate Ashnod's Altar by sacrificing Dread Tiller.
- When Dread Tiller dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
- When Dread Tiller enters the battlefield, it triggers, putting a -1/-1 counter on it.
- Repeat.