Unholy Might Needs More Ways to Access It

Right now on the atlas tree there are 2 ways to get unholy might, one in staff mastery, and one for minions in minion mastery. Other than that it's mostly dependent on recent kills with few exceptions if you're accessing it through items or cluster jewels. The cluster jewel option (Overwhelming Malice) is pretty much the only way most people are using it most likely since its reliant on critical strikes- not recent kills or blocking.

My suggestion is to put Unholy Might on critical strike into the passive skill tree near or between the assassin and ranger skill trees.

You could also add ways to increase it's effect or duration like you did with onslaught, phasing, consecrated ground, etc.

Thanks!