Medusa Sheild is killing blind and undead, bug?

[Foodstamp]

Where are you guys getting this information? Grave's Anatomy? Har Har Har.

[Xietor]

I do not think undead should be immune to petrify. They are overpowered as is. So for balance they need to remain vulnerable to it.

And lest you forget, the 3 medusas were as powerful as gods.
Think of their ability to turn things to stone as magical. Since undead are not already stone-they are susceptible to be turned into stone.