Infinite combat phasesInfinite mana creatures you control can produceInfinite untap of creatures you controlInfinite untap of enchanted permanents you control
How it works
At the beginning of your combat phase, Preston's first ability triggers, putting a Settlement Aura token onto the battlefield attached to a land you control.
Declare Preston as an attacker.
Preston's second ability triggers, untapping each enchanted permanent you control.
Move to your postcombat main phase.
Activate any number of enchanted permanents you control by tapping them, adding at least 3.
Activate Aggravated Assault by paying 3, untapping all creatures you control and causing you to get an additional combat and main phase after this one.
Repeat.
This explosive loop transforms your combat step into an endless engine of war by leveraging the steady buildup of your Settlement tokens. Every time Preston Garvey, Minuteman attacks, his ability untaps all enchanted permanents—including the very lands enchanted by those tokens to fuel your mana pool. That surplus of mana feeds directly into Aggravated Assault, allowing you to repeatedly pay its activation cost to generate fresh combat and main phases, keeping Preston swinging infinitely.