Undead with spellfire

[quick_comment]

Undead have no constitution scores. Does this mean they are incapable of absorbing spells via the spellfire wielder feat?

[Draken]

Off the bat. Not possible.

You could argue keying it to the undead's charisma. But that is houserule territory.

[hamishspence]

Given that one of the main adversaries in Crown of Fire was a "lich lord" spellfire wielder (like a demilich in appearence, but no gems) that kind of houserule makes sense in the context of the game.

[Kaiyanwang]

Consider that in LM (IIRC) the designer suggest to use Charisma when something could be viable (or cool) and Constitution is not there to help, as Barbarian Rage.

So, yes, I second what said above. Charisma seems reasonable.