Need help with some gamer nerd logic

[Ghoulish Delight]

The Paladin can wear any of it, so there's one right off the bat.

Only a class than can wear both the shield and the sword can do it, so that rules out Cleirc, Druid, Ranger, leaving Barbarian, Bard, Paladin as the only possibles.

The Barbarian cannot wear either of the armors, so that's out. The Bard can't wear either the dragonscale armor or helmet, that's a no. So we're all the way back to the Paladin.