People laughing at the idea of the Grey Knights assassinating Emperor, when half the Astartes Legions couldn't get the job done - but that's the point right? The only dudes who stand half a chance are marines that can sneak teleport. Frontal assault is out, they are a scalpel
People really hate the idea of Grey Knights murdering the Emperor - yes, it would be very hard, maybe even impossible. No, they wouldn't stand a chance against all the emperor's defenders in a fair fight. Who else would stand any chance of doing it? It's a hail mary
People laughing at the idea of the Grey Knights assassinating Emperor, when half the Astartes Legions couldn't get the job done - but that's the point right? The only dudes who stand half a chance are marines that can sneak teleport. Frontal assault is out, they are a scalpel
Imagine Grey Knights launching a surprise attack en mass - that might be the only force in the galaxy that could get the job done. Experts at facing psychic daemons of immeasurable power.
@PassOb even if they were equal that's not really my point - trying to go through custodes is a terrible idea, Grey Knights are maybe the only force in the galaxy capable of going around