Missy, Phyrexian Altar, and Riptide Pilferer

Prerequisites

• Missy on the battlefield
• Phyrexian Altar on the battlefield
• Riptide Pilferer on the battlefield

Steps

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

Results

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