Decaying (Greater)
Eerie waves of purplish energy dance across the surface of a weapon etched with this rune. When you hit with the weapon, add 1d4 void damage to the damage dealt. In addition, on a critical hit, the target takes 4d4 persistent void damage; if the target has a shield raised, the shield takes the same amount of persistent damage (its wielder rolls the flat check to see if the persistent damage ends, or the GM rolls if the shield is no longer in someone's possession). Unlike normal void damage, the void damage from a decaying rune damages objects, constructs, and the like by eroding them away.
The void damage dealt by this weapon ignores the target's void resistance or immunity.
Traits
Something with the magical trait is imbued with magical energies not tied to a specific tradition of magic. Some items or effects are closely tied to a particular tradition of magic. In these cases, the item has the arcane, divine, occult, or primal trait instead of the magical trait. Any of these traits indicate that the item is magical.
Effects with this trait heal undead creatures with void energy, deal void damage to living creatures, or manipulate void energy.