@danberhe
Well, that asinine appearance of Battleship Yamato was supposedly a clue.
And it would be to pragmatic and sensical to off a rising villain. So that's why.
I'm going to copy the spoiler rant valconius posted last chapter.
If it's false, it's humorous. If it's true, it's hilarious
I think Desir is 2 at most, but has a sacred treasure in the form of gloves that boost it by another level.
Also, his dragon magic far exceeds any known tiers but at a huge penalty (not surprising since he created a damn sun).
Dragon Slave is vastly superior to Megumin and her expurosion.
Slayers is the gold standard.
Still one of the best horses in manga form. Up there with Raoh's.