Missy, Phyrexian Altar, and Aphetto Alchemist

Prerequisites

• Missy on the battlefield
• Phyrexian Altar on the battlefield
• Aphetto Alchemist on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Aphetto Alchemist, adding
2. When Aphetto Alchemist dies, Missy's first ability triggers, returning Aphetto Alchemist from your graveyard to the battlefield face down as a 2/2 Cyberman artifact creature
3. Activate Aphetto Alchemist's morph ability by paying , turning it face up
4. Repeat

Results

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