Dust: An Elysian Tail Boost Jump Skip
Just like with the wall climb trick that Jman found, you can also just gain height without a wall by doing two airslashes followed by a dust storm (turning around with the start of the air attacks seems to help), and pretty much gain infinite height anywhere once you get aerial dust storm. The other method I showed is just an alternate way of doing this. You can do the rising swings/DS to skip all the other parts where you need the Boost Jump as well. You can also use this to fly right over enemies and skip a lot of barriers in general (it seems when you're high above the enemies they recognize you as being far away enough from any enemies to let you through).
For the record I did NOT find this. Credit goes to longraverei to showing me this.
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