M'arrillian brainwashing

does M'arrillian brainwashing affect the opponenent's deck as well? it didn't seem like it did back when we played on ChaoticGame, but the fact that the text on Chieftains just say Minions use brainwashed abilities, it doesn't specify whether it's just Minions controlled by the one who controls the Chieftain or all Minions

I would say it is just your creatures that u control. I never saw anything happen to the opponent's decks when i played Marrilian Master decks.

it's this kind of vagueness that really confuses people only reasonn I got this idea is cause M'arrillians could brainwash opponent creatures in the show

Yeah, I checked the rules after buying a M'arrillian Invasion deck yesterday, the M'arrilian chieftains only affect your own creatures. I got a Gan'trak from a pack yesterday too!