actually, this is correct. her ult would be an amazing ability if she was a melee champ. you coudl split the enemy team right down the middle while engaging on a specific opponent.
but since she rather prefers to stay at range, its extremely situational.
you can pull off some good plays with it in ganks, but it doesnt really feel like a part of her kit since the ult doesnt interact with her other abilities in any shape or form or would be part of her combo.
furthemore, she seems to have very low kill potential since she has to work with 3 damaging abilities.
makes her 100% more of a control mage instead of a damage oriented mage.