Xavier Sal, Infested Captain + Agatha's Soul Cauldron + Herd Baloth + Cinderhaze Wretch

Xavier Sal, Infested Captain

Agatha's Soul Cauldron

Herd Baloth

Cinderhaze Wretch

How it works

1. Activate Xavier Sal's second ability by tapping it and sacrificing another creature, putting a +1/+1 counter on it and Herd Baloth.
2. Herd Baloth triggers, creating a creature token.
3. Activate Xavier Sal using Cinderhaze Wretch's second ability by putting a -1/-1 counter on it, untapping Xavier Sal.
4. Repeat.

This clever synergy turns Xavier Sal, Infested Captain into an engine for infinite growth and token generation by borrowing activated abilities from the graveyard. While Agatha's Soul Cauldron first primes your creatures by granting them the activated abilities of exiled creature cards, it also sets up the necessary +1/+1 counters—which are crucial for enabling Cinderhaze Wretch's self-untapping ability once its text is shared. By tapping Xavier Sal to sacrifice a creature and proliferate, you simultaneously trigger Herd Baloth to create a 4/4 green Beast token and fuel the loop with the -1/+1 counters needed to constantly untap your key pieces.