But then the Slaanesh player summons 6 more keepers, so really you’ve done him a favor
i haven’t matched it out yet, but I’m fairly sure your big unit of blight Kings can one round him if they get the drop on him
48 wounds isn’t a big ask in aos. Skeletons, skaven infantry, a bunch of chaos units, gobbos, and more can easily mass 48 wounds
gotrek ruins the day of people whose army plan was “I’m going to shove my big gribblies down your throat turn one.” And Gotrek is a good solution to that issue mechanically
skaven are barely going to care though, and I’m not sure Slaanesh realistically will either. This is the final nail in gristle gore. I can’t imagine another undead army having much issue with Gotrek though. Or either of the nova top 10 tzeentch lists. I dunno, maybe daughters of khaine will have a problem? But, man, they’ve been top tier for like a year
so many armies revolve around dumping their entire army in your face in a couple turns with units that do as much or more damage than Gotrek will and ruining your day, and I think that is particularly unfun interactions for the game, so more reasons to not do that is pretty solid