Mass Control is one of the highest tier Follower abilities, as well as the Enchantress' longest cooldown, and it is frequently wasted on nothing. I think the requirements for the spell to be cast should be adjusted. It would be great if the Enchantress could wait until there was an enemy in the ability's radius before casting Mass Control.
As it is, Mass Control only CC's enemies if it comes off cooldown in a subsequent fight, after it has been casted uselessly 60 seconds before.
EDIT: This thread is a duplicate and should be deleted