Enduring Renewal + Crookshank Kobolds + Intruder Alarm + Gríma Wormtongue

Enduring Renewal

Crookshank Kobolds

Intruder Alarm

Gríma Wormtongue

How it works

1. Activate Grima Wormtongue by tapping it and sacrificing Crookshank Kobolds.
2. When Crookshank Kobolds dies, Enduring Renewal triggers, returning Crookshank Kobolds from your graveyard to your hand.
3. Resolve the Grima Wormtongue ability, causing target player to lose 1 life.
4. Cast Crookshank Kobolds by paying 0.
5. Repeat.

This clever loop hinges on the zero-mana cost of Crookshank Kobolds, which lets you cast it repeatedly for free while Enduring Renewal immediately returns it to your hand whenever it hits the graveyard from the battlefield. Gríma Wormtongue provides the sacrifice outlet to send the Kobolds straight to the graveyard while draining life away from your opponents, turning free casts into endless life loss. Meanwhile, Intruder Alarm watches every creature enter the battlefield and untaps your permanents—though the Kobolds cost nothing to recast anyway, the Alarm keeps your utility creatures primed and ready. Together, these pieces create an unstoppable cycle of sacrifices and triggers that drains the table dry.