NOOOOO, their Only Bones is annoying enough. Gah, partially as I didn't get any half decent crushing attacks till my second runthrough of the campaign, but still.
Things being on fire still taking fire damage is a common trope. We can explain that their opponent's fire is unrighteous while our own fire is fueled by our willpower.
Yeah, single-mob double immunities would be horrible! It's hard enough to plan for maps that have different mobs with varied resistance.
It is unrealistic for the devs to do such a massive rebalancing of the undead, but it I like the classic idea of healing hurting undead, and burning skeletons being fire immune. how can you burn with an attached burn card on something already alight?
Well there's the old saying about fighting fire with fire, right? Anyway, if Burning Skeletons ever did get a fire immune card it should include a cold vulnerability as well.
The burning skeletons don't really need the double immunity but what does feel a bit odd are the fire sprites. Not only do they look like a living flame, they don't have any other attacks except fire. If any creatures deserve fire resistance, it's them.
