Blightbeetle + Phyrexian Altar + Bazaar Trader

Blightbeetle

Phyrexian Altar

Bazaar Trader

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.

By using Bazaar Trader to permanently hand an opponent Blightbeetle, you weaponize its static ability—which forbids opponents' creatures from ever receiving +1/+1 counters—against their own mechanics. This creates an infinite sacrifice loop when paired with an undying creature and Phyrexian Altar, because the beetle's passive suppression prevents the counter that would normally shut down undying from ever being placed. Every time you sacrifice the creature for mana using the Altar, it simply returns to the battlefield fresh, ready to feed the loop again for endless colored mana and death triggers.