Azeroth DB
Holy Mightstone
Shatters the Holy Mightstone, increasing Attack Power by 300 against Undead and increasing Holy damage from spells and effects by up to 400 against Undead. Lasts 10 minutes.
10mHoly Mightstone
+300 Attack Power against Undead. Holy damage from spells and effects increased by up to 400 against Undead.
From items
Adventurers’ notes