Keep in mind that it uses the reaction of everyone who moves. That means they can't make OAs or cast Absorb Elements, Shield, or Counterspell. When they use it, it's time to hit them hard, or bypass the melee party members for the back line.
People don't use it for those reason sometimes, but it is freaking awesome and arguably OP for repositioning the battlefield all in one turn and even if they don't use it they still get the temp hit points.
I have used it a ton to set up my own spells too. Two ways
First getting allies out of an AOE spell you want to use. This works awesome with Fear and Hyp Pattern. Use it to get your frontliner to shift out of the way so you can cast Fear or for several allies to get out of the scrum so you can cast Hypnotic Pattern or Synaptic Static.
Also you can include yourself and basically double your movement on that turn to move yourself in position for a good spell (without AOOs). Again I commonly use fear with this.
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