Thanks for taking the time to look and provide feedback, Revlid!!
I wasn't aware of universal abilities so I appreciate you including them in your post about creating Abilities.
Powerful Jaws - I see what you mean about it not being worthwhile compared to Onslaught. The basic premise was for them to be able to stack on a bit of extra damage even if they aren't in a "cohort". I might look to make it a [Double] +1A, +1S instead.
Wary Fighter - This is a copy of the Gryph-Hound [Triple] Darting Attack. I see what you mean about it being available for a larger number of fighters, though. I might nerf it to something like a [Double] bonus disengage if it doesn't play-test well. Makes me wonder how a warband of 1x Hunter-Prime with Hurricane Crossbow and 5x Gryph-Hounds would play. 🤔
Disappear from Sight - Yeah, I'm fond of this one. It was based off the Cypher Lords [Triple] Shadowy Recall. That one's a greater distance (12" + value) for a wider range of fighters but restricted by the position of the Thrallmaster/Luminate. Being camouflaged between activations is definitely a big advantage, though. Maybe something like a bonus move (+value) and +2 toughness until next activation. That or up the Chameleon's points value.
Summon Seraphon - I thought the fact that it's a [Quad] would balance out not losing 1-6 points of damage. You reckon they should still be damaged? Yep, I shamelessly stole all the phrasing I could from GW's cards. 😁