Hm.
Thing is, we can ensure he has an heir, regardless of any magic/curse trying to stop that.
Fleshcrafting of ours is just about advanced enough for that, seeing how we can make a body for Syrax-Reborn (but choose not to).
And if his inability is purely physical... it's even easier.
Question is, should we?
He doesn't seem like an overtly horrible person/ruler/general.
He might just stabilize the region he's in to a very large degree... While Asure will be focused on stabilizing and consolidating his region.
And both will be, in an ideal world, focused on surviving coming Long Night, and fighting off Bloodstone!Emperor.
...And maybe Hastur.
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Bah, this is all bullshit.
We should learn what's that Fire-Storm he's trying to make to burn away the Golden Company's forces.
I can all but guarantee it won't really work regardless, either the Clerics will find a way to turn it around, or get everyone immune to it (because Dragons = fire, and Tiamat = bullshit).
But if he can get it started at just the right time...
We could hit GC far harder than the single Moonchaser's worth of force-projection would allow for.
(and yes, for all that the attack would include an extreme amount of Companions and Minions, it is the Mooncahser that I believe would really be driving the assault on the "normals", - as something even the drakes of GC have no hope of getting through)