[FEH] Byleth Abyssal Limited Battle - Echoes: Shadows of Valentia

I did not think I would be able to clear this! My Echoes: Shadows of Valentia roster is extremely limited, haha.
There were plenty of close calls in this run that would have otherwise made it impossible. For example, Palla surviving the first Red Flier attack on 1 HP, or at the end where Palla defeats the Sword Knight with exact damage.
This run went through several iterations, with me trying to Vantage sweep with everyone else supporting Palla, but it didn't work out just due to a lack of damage (that, and Legendary Byleth would have more likely than not one shot Palla with Hardy Bearing Sublime Heaven). Additionally, I had to fix up Python's entire kit for this battle. Originally, he was on an old Dark defense team for Aether Raids, back in the early Saviour days where you could get by them with Firesweep weapons and doubling up on Poison Strike. That wasn't really cutting it here thought, so he got a bit of a glow-up. Obviously you can refine Snide Bow, but I don't have the materials, and it wouldn't make a difference here anyway.
Rudolf should be due a refine at some point in the future, and I'm excited to see how they could make him relevant again. I remember when he came out and I spent ages trying to beat him in the Chain Challenge.
Harmonic Sonya ended up putting in a lot more work than I would have originally thought, being able to snipe the Red Mage towards the end and the usage of the Harmonic Skill allowing both herself (themselves?) to defeat the Sword Fighter and Palla to defeat the Green Manakete.