Missy + Phyrexian Altar + Frontline Strategist

Missy

Phyrexian Altar

Frontline Strategist

How it works

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

This clever loop relies on Missy to constantly recycle Frontline Strategist after it is sacrificed to Phyrexian Altar. Because Missy resurrects dying nonartifact creatures as face-down 2/2 Cyberman artifact creatures, Frontline Strategist enters the battlefield ready to be turned face up again using the very white mana provided by the Altar. By repeatedly paying that morph cost to flip it face up and then sending it back to the graveyard, you generate an endless cascade of enters-the-battlefield, leaves-the-battlefield, and death triggers.