Necro Bone armor is physical damage.
Druid Cyclone armor is elemental damage. (Fire, Ice, Lightning)

Trap ass are good. 5 Trap well placed will make it easier to hit. Any good trap ass will use level 1 mind blast to make a forced recovery. With a very good casting rate it hard to even do anything. So 5 trap hitting and causing the recovery even more will make it deadly. Trap are also very useful to control the battle field. With Heart of the Oak it is possible to have a Oak Sage and with lvl 1 + Shadow Warrior or Master it already make 2 target. Which make it hard to stop and hit randomly. By stoping it also mean risking getting hit by traps. Which is why Trap ass can be good. Someone that is a fast clicker would most likly win against a paly as the paly only chance will be to charge in the area needed to cast. But while charging the trap ass can mind blast lock and place in between a trap if needed. With some Lightning Facet they are great.