Chameleon is a tough call - the special has fantastic potential utility, but without any costume he’s… hmm a titan/Mythic Titan specialist possibly? Size isn’t everything, but in stats and survivability he’s basically a 4* hero at a 5* cost. If you don’t mind investing in a specialist, it’s a very nice ability, just tough.
I don’t know if you’ve pulled the trigger already, but I guess I’d say some of whom you keep depends on whether any of your keepers would be leveled potentially soon, or “maybe someday.”
If it’s the latter, then heroes whom you can costume via Visiting Outfitter are a consideration — depending on how many *other* folks you have already waiting on a costume.
Hulda -> cHulda is a consideration, just ask yourself how often you’d go full summon (she’d likely go well together with cW3K heroes and their Unstoppable Minion schtick).
Depending on what you’re facing, Vaishali is possibly still decently usable as-is, but also her costume will be VO-able in about a year.
For more immediate use:
Eron’s Shifting Mindless Attack is always useful; his attack mechanic mean that Growth/Wither matter for with him than most heroes.
And while some folks look down on HotM, Liora and Dvalin are both reasonably respectable damage and some utility (Liora’s dispel-and-possibly-steal, Dvalin’s debuff-and-buff).
—
Personally, I’d probably lean toward something like Vaishali, Eron, and either Chameleon or a HotM (possibly Liora if you were leaning her way already), but it depends a bit on how you’d combo them up with teams of course.
Good hintinghunting!
