Mikaeus, the Unhallowed + Phyrexian Altar + Carnifex Demon
Produces: Infinite colored mana, Infinite death triggers, Infinite ETB, Infinite LTB, Infinite sacrifice triggers
- Mikaeus, the Unhallowed
- Phyrexian Altar
- Carnifex Demon
- Color identity
- B
Steps
- Activate Phyrexian Altar by sacrificing Carnifex Demon.
- When Carnifex Demon dies, its undying ability triggers, returning it from your graveyard to the battlefield without a +1/+1 counter on it due to its replacement effect.
- Repeat.