Necromancer charm undead nerf.
 

I'm in City of Misty using Cajole Undead at arena. The spell has yet to last longer than 1 minute, and typically lasts around 3-5 ticks. I know with the recent patch some things have changed, but I don't think this was intended. Spell information says it can last up to 15 minutes. I don't know if this has been reported yet or not, but I think it should be looked into.

what is the con of the mobs you are charming and are they debuffed?

They were blue mobs, I realized it was specifically with "a phantom" which I can only assume is the higher level mobs in the zone. The other mobs would charm for a normal amount of time, I had a bad series of RNG and kept getting phantoms to use as pets. Also they were not debuffed.