In the game I'm running, the fighter was hit by an Intellect Devourer's Devour Intellect ability, so she now has an Int of 0 (though the rest of the party managed to kill it before it could do anything more). The party is currently level three. The players are arguing that they should kill her character or let her die naturally, since they won't be able to restore her until they hit level nine and can cast greater restoration, and they won't be able to reach a settlement to hire an NPC caster for at least a few months in-game (probably eight to ten sessions). I'm arguing that that would be an irredeemably evil act (killing a helpless ally), and would cause the Paladin to fall and the cleric to have to choose a new deity.
I'm not against any mercy killing, but the character is just effectively stunned until they reach level nine or get to a settlement, so I can't see any justification for them killing the character.
I'm not against any mercy killing, but the character is just effectively stunned until they reach level nine or get to a settlement, so I can't see any justification for them killing the character.