Grenzo, Dungeon Warden + Ashnod's Altar + Zask, Skittering Swarmlord

Grenzo, Dungeon Warden

Ashnod's Altar

Zask, Skittering Swarmlord

How it works

1. Activate Ashnod's Altar by sacrificing the Insect, adding CC.
2. When the Insect dies, Zask's first ability triggers, causing you to put the Insect on the bottom of your library from your graveyard.
3. Activate Grenzo by paying 2, putting the Insect into your graveyard from the bottom of your library, and then putting it onto the battlefield.
4. Repeat.

This delightful loop turns the bottom of your library into an endless revolving door for your sinister swarm, fueled entirely by the mana generated from Ashnod's Altar. When your chosen creature bites the dust to feed the Altar, Zask, Skittering Swarmlord steps in to catch it on the way down, neatly tucking the Insect back onto the bottom of your library while also fueling your graveyard. From there, Grenzo, Dungeon Warden uses that two-mana sacrifice payout to reach deep into the deck, pulling the very same creature straight back onto the battlefield ready to be sacrificed once more.