[{quoted}](name=Hemulen Magi,realm=NA,application-id=3ErqAdtq,discussion-id=heYg00X2,comment-id=0002000000000000000000000000,timestamp=2018-09-01T06:15:30.703+0000)
Pretty much any champion can provide some reliable value in a fight, even if they mess up. At least the reliable aspect of Sejuani's E requires teammates to make the best use of it, and thereby influences Sejuani's actions since she will usually only fight with allies present (she is essentially the opposite of a duelist). Compare that to the reliable value provided by an autoattack or targeted ability based champion, or an assassin/diver with a combo that lacks real counterplay once memorized and practiced enough to reliably execute it. Sejuani relies on her allies to a greater extent than most other champions, even if her allies don't need to go far out of their way to make Sejuani work as long as the Sejuani player knows and considers her own requirements for success.
It doesn't require her teammates to do anything other than what they were already going to do. Sejuani's not any different than the dozens of other champions who prefer to fight with allies around. Her E further rewards her for what she was already going to be doing courtesy of her class. It also allows her to remain relevant even if she couldn't hit the broad side of a barn.
It's...also not Sejuani's only frustrating mechanic?
The nature of having multiple instances of conditional CC is that they stop being conditional after you land the first one. This makes it exponentially more difficult for you to dodge than it is for her to aim.
Her E is always available. There's literally no opening for you to fight without the threat of her turning things around with a stun. It's not that she can always stun someone reliably. It's that she can and _will _ be able to stun _anyone _ reliably.
Sejuani's R provides a massive slow field and zoning tool even if she misses her target.
Sejuani's W adds to E on both hits, despite the first one being almost unavoidable. This creates situations where she stuns you even though you managed to disengage before she earned the final stack.
Sejuani's passive allows her to merely walk out of situations that would have been deadly for many other champions.