I've a 6 immunity necromancer berserker (had to work around curse proof) with stealth and beast hints. He has hidden fire thrower and I bounced around his weapon elements to remove bombs and necromancer temporarily.
Now he just has thick skinned, elite gang, poison weapon, and tremor listed under the bonuses column. It's a level 25 training save and I've been bouncing him up and down all day and not gaining beast slayer.
I've gained it as the 5th bonus ability in the past but I usually gun for beast slayer before I gain more than 3 immunities.
Has anyone been able to gain beast slayer after 6 or more Immunities without a nemesis mission?
I suspect it's tied to the number of immunities, not just having beast proof, which would be odd. That's why I'm trying to debunk my own myth.
Beast slayer is not nearly as valuable on an olog, I just prefer to max them out. If I prove myself wrong I'll reply here but it'd be cool to hear if someone else has the same suspicion or if they are positive it's just a myth.