Larian Studios Forums Baldur's Gate III Baldur's Gate III - Story & Character Discussion [END SPOILS WARNING] Addressing Karlach (PLEASE PUT SPOILERS IN TAGS)

Of course there will be always a problem when you have scroll of resurrection in game, so you can tell, that you can resurrect a character after he dies lets say by normal death (and the game tells you it is a permanent death). But in this case you have solution prepared by the game (new heart), but you cannot use it.