I have just had a game. Here is the replay. I remember that there were discussions about channeling runes overperforming. So in the replay his banshees got hit by my 2x tzeentch marines, then the warlock started healing them, they engaged my csm (I accidentally pressed to enter the building), my autocannon havocs were firing at them from another building, my other tzeentch marines were firing at them, my heretics along side their champion were smacking them and banshees owned everything. And they even had more health after the battle. That is a clear case of an overpowered thing. Bring it back to the retail's state at least. Time to fill the blank of eldar balance changes

Even the Apothecarion can't heal his marines with his 3rd armor that costs 150 / 50 as good as the Warlock does it with his 100 / 20 T1 wargear.
Look for that battle in the end of the replay.
EDIT: I forgot to mention that the distort field had been up on the banshees. But anyway heretics could not harm them at all. This is not right. I remember a replay when 3x hormagaunts were owned by banshees under the effect of this ability. I do think it gotta be reverted to the retail's state.