Quote Originally Posted by Deusteele View Post
Necromancy can only be done be weakening the barrier between the Void and a shard, then desecrating a corpse.
The Warrior of Light has canonically desecrated souls, though - if we take the ARR relic weapon quests at face value when sent off to go and slay sentient creatures - including humanoids - in order to infuse their aether into a weapon. Necromancy has a worse reputation, though the BLU quests have Voidsent held in Ul'dah despite the risks so they can be fought in an arena for entertainment so the lessons surrounding Mhach and the dangers involved do not appear to have been taken on board.