Because you cant make decisions based on 1/2 truths.
Group euphoria is infinitely better than mana shield glitched or not we have a 50% chance to aoe auto attack with stupid attack speed and euphoria procs on all hits.
On top of that its a 1:1 mana shield so its super bad AND guardiands and defs running around with blue drain like what kind of balance do you think you can talk about?