I’ve noticed this while playing the other day. I was leashing my Master Yi while playing with a Renata in the bottom lane, and instead of using my E right away, I waited a few seconds before casting it, and when I did, I got a free red buff of my own and a bunch of xp while walking back to lane, which then I used to get lvl 2 first and get first blood off that.
This is just a small tip if you ever decide to play Aurelion in the bottom lane. That red buff really helps you early on with the health regen it provides.
As an Asol main i can confirm, its such a hidden and genious move, my junglers always blow up the chat in pure awe of how awesome it was.