^You're not devaluing Hydra. Your explanation perfectly ( at least in my experience) sums up the pros and cons of using Hydra instead of mirror images.
I'm still not certain of trapped is better than powerful. You are essentially relying on your follower's thunderfury proc to keep it the bonus up (the single target cold applied by weapon damage type is insiginificant to me since its only one target). I do realize that trapped provides a bigger damage boost but I'm not sure if its up time is high enough to beat out powerful.
I'm still not certain of trapped is better than powerful. You are essentially relying on your follower's thunderfury proc to keep it the bonus up (the single target cold applied by weapon damage type is insiginificant to me since its only one target). I do realize that trapped provides a bigger damage boost but I'm not sure if its up time is high enough to beat out powerful.