Hi , I'm new to this furom and to WOW.
I have a level 28 mage (fire spec). There is a nice trinket that can be baught we you have enough honnor points. This trinket gives your spell a penetration factor of 10 and +4 stamina. It is called the Rune of Perfection.
I would like to know if penetration is useful against normal mobs. I know that some bosses and some players have magic resistance but do normal mobs have any magic resistance ?
I'm not gonna buy this trinket if it is almost never gonna be of any use.