Zask, Skittering Swarmlord + Verdant Succession + Bloodflow Connoisseur

Zask, Skittering Swarmlord

Verdant Succession

Bloodflow Connoisseur

How it works

1. Activate Bloodflow Connoisseur by sacrificing another nontoken green Insect.
2. When the Insect dies, Zask and Verdant Succession trigger.
3. Resolve the Zask trigger, putting the Insect on the bottom of your library from your graveyard and causing you to mill two cards.
4. Resolve the Verdant Succession trigger, searching your library for that Insect and putting it onto the battlefield.
5. Resolve the Bloodflow Connoisseur ability.
6. Repeat.

This loop turns your graveyard into a revolving door for green Insects, anchored by Bloodflow Connoisseur as the ultimate sacrificial outlet. Whenever you feed an Insect to the Connoisseur, Verdant Succession steps in to fetch a fresh copy straight from your library, while Zask, Skittering Swarmlord ensures the fallen creature ends up milled right back into your deck for future loops. Because Zask also lets you play lands and cast Insects from the graveyard, this engine rapidly churns through your entire library while stacking endless death and sacrifice triggers.