This item I believe was added to ogres at a later date, but was seemingly unknown until I accidentally popped one trying to get a chaos gem...
Elemental
Ok.
You feel informed:
Object 'prismatic blade', Item type: WEAPON
Item is: NOBITS
Weight: 2, Value: 33000gold, Worn in: TAKE WIELD
Damage Dice is '2D4'
Can affect you as:
Affects: REGEN_MANA by 2
Only those who are at least apprentice avatars may use this item.