Rat King, Verminister + Intruder Alarm + Belonging + Bloodflow Connoisseur

Rat King, Verminister

Intruder Alarm

Belonging

Bloodflow Connoisseur

How it works

1. Cast Belonging by paying 5.
2. When Belonging enters, it and Intruder Alarm trigger.
3. Resolve the Belonging trigger, creating three 1/1 Shapeshifter creature tokens with changeling.
4. When the Shapeshifters enter, Intruder Alarm triggers three times. Resolve the Intruder Alarm triggers from this step and step 2, untapping all creatures four times.
5. Activate Bloodflow Connoisseur by sacrificing Belonging.
6. Activate Rat King by tapping it and sacrificing the Shapeshifters, returning Belonging from your graveyard to the battlefield.
7. Repeat from step 2.

This brilliant loop thrives on the continuous recycling of Belonging, whose entry sparks a cascade of triggers made possible by Intruder Alarm's static ability to untap all creatures whenever *any* creature enters the battlefield. By using Bloodflow Connoisseur to sacrifice Belonging and Rat King, Verminister's activated ability to sacrifice the Shapeshifter tokens, you can constantly bring Belonging right back from the graveyard. This endless cycle continuously feeds Rat King, Verminister's own disappearance trigger while keeping your board perpetually untapped for infinite value.