Mikaeus, the Unhallowed, Hex Parasite, Ashnod's Altar, and Chromatic Orrery

Prerequisites

• Mikaeus, the Unhallowed on the battlefield
• Hex Parasite on the battlefield
• Ashnod's Altar on the battlefield
• Chromatic Orrery on the battlefield
• Hex Parasite does not have a +1/+1 counter on it

Steps

1. Activate Ashnod's Altar by sacrificing Hex Parasite, adding
2. Hex Parasite dies, triggering its undying ability, returning it from your graveyard to the battlefield with a +1/+1 counter on it
3. Activate Hex Parasite by paying , removing the +1/+1 counter from it and giving it +1/+0 until end of turn
4. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers