The Wise Mothman + Moss-Pit Skeleton + Altar of Dementia + Herd Baloth

The Wise Mothman

Moss-Pit Skeleton

Altar of Dementia

Herd Baloth

How it works

1. Put a +1/+1 counter on Herd Baloth.
2. Herd Baloth and Moss-Pit Skeleton trigger.
3. Resolve the Herd Baloth trigger, creating a 4/4 Beast creature token.
4. Resolve the Moss-Pit Skeleton trigger, putting it from your graveyard on top of your library.
5. Activate Altar of Dementia by sacrificing the Beast token, causing you to mill Moss-Pit Skeleton and three other cards from the top of your library.
6. The Wise Mothman's second ability triggers at least once, putting a +1/+1 counter on Herd Baloth, and any other desired creature(s) if applicable.
7. Repeat from step 2.

This looping engine harnesses the synergy of counters and milling to overwhelm the table. You begin by placing a +1/+1 counter on Herd Baloth, which triggers both its ability to create a 4/4 Beast creature token and Moss-Pit Skeleton's ability to return from the graveyard to the top of your library if it's there. Sacrificing that Beast token to Altar of Dementia mills Moss-Pit Skeleton along with three other cards, which in turn triggers The Wise Mothman to distribute new +1/+1 counters based on the nonland cards milled. This places a counter back onto Herd Baloth to restart the loop, fueling an endless cycle of self-mill, tokens, and growth.