Missy, Phyrexian Altar, and Daru Mender

Prerequisites

• Missy on the battlefield
• Phyrexian Altar on the battlefield
• Daru Mender on the battlefield

Steps

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

Results

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