Missy, Phyrexian Altar, and Foothill Guide

Prerequisites

• Missy on the battlefield
• Phyrexian Altar on the battlefield
• Foothill Guide on the battlefield

Steps

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

Results

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