Frozen Gate is an enigma but what i do know is that it fires an invisible instant projectile at the enemy it is attempting to pull. since if i remember correctly from testing a couple years ago, frozen gate could be reflected (as in you, the caster of frozen gate are teleported to the player reflecting as well as have a crystallized slab projectile thrown at you) and the synergy on frozen retreat does not properly respect cyrodiils range standards. What's more surprising to me is how both of its morphs haven't been merged together and one replaced with something useful like a damage dealers trap since having both morphs be a niche tank pull doesn't do a morphing system justice. No-one even knows that frozen retreat exists lol.