Coercive Recruiter + Marrow-Gnawer + Conspiracy

Coercive Recruiter

Marrow-Gnawer

Conspiracy

How it works

1. Activate Marrow-Gnawer by tapping it and sacrificing another Rat, creating at least one 1/1 Rat creature token.
2. When the Rat enters the battlefield as a Pirate due to Conspiracy, Coercive Recruiter triggers, untapping Marrow-Gnawer.
3. Repeat.
4. If you control at least two other Rats, this combo creates infinite additional Coercive Recruiter triggers, which can be used to untap any creature(s) infinitely and/or to gain control of any number of creature(s) until end of turn.

This loop relies on Conspiracy to rewrite tribal identities, turning every creature you control into a Pirate for Coercive Recruiter and a Rat for Marrow-Gnawer. When you tap Marrow-Gnawer to sacrifice a Rat and churn out a wave of new tokens, Conspiracy ensures those fresh bodies enter as Pirates, triggering Coercive Recruiter. The Recruiter's ability untaps Marrow-Gnawer in response, letting you immediately repeat the sacrifice. As long as you have enough initial fodder to sustain the loop, this generates infinite enters-the-battlefield triggers, an endless army of tokens, and infinite untaps of your entire board.