Blightbeetle + Phyrexian Altar + Blim, Comedic Genius

Blightbeetle

Phyrexian Altar

Blim, Comedic Genius

How it works

1. Donate Blightbeetle to an opponent
2. Activate Phyrexian Altar by sacrificing the undying creature.
3. When the undying creature dies, its undying ability triggers, returning itself from your graveyard to the battlefield without a +1/+1 counter on it due to Blightbeetle.
4. Repeat from step 2.

This cunning setup weaponizes an opponent's inability to grow stronger by turning a defensive hoser into an engine of self-sacrifice. While Blim, Comedic Genius serves as the delivery mechanism to safely donate Blightbeetle across the table, the beetle's passive suppression of +1/+1 counters is the true linchpin that breaks the loop. By preventing those counters from sticking, Blightbeetle ensures that your recurring threat can never lock itself out of the graveyard, feeding endlessly into Phyrexian Altar to churn out infinite mana, sacrifices, and leaves-the-battlefield triggers.