E9S is an interesting one to talk about. There's a lot to like about it! It has memorable presentation in the distinct phases, particularly the tiles. It's got a reasonably good tutorial aspect with animation reading, proteans, tether breaking, etc. But it's also in my eyes not approachable enough. The proteans are more punishing to deaths than a fight deeper into the tier, there's a decent bit of required coordination, it's tough. Which does make it fun as a long-time player, but hurts it as specifically an introduction. Sadly this is a handicap that the first fight of a final tier will always have to deal with, because it needs to be engaging to players who have done the whole rest of the expansion. You're likely not dealing with as many totally fresh people at that stage anyway, meaning it's safer to do, but with the criteria I based this list around even though I generally like the fight that ends up keeping it off the list. Though if I'd made this video a few years earlier it probably would've made it in!
