Shye knew the Phoenix could resurrect itself.
However, he didn't know how and what its rebirth would look like, which was rather dangerous, considering they only had one shot at this.
Still, they had to try and slay it. If today wasn't their day, so be it, at least they would know what to expect next time.
Even the WAA probably doesn't expect them to complete the mission, anyway, as there had been no cases of even heroes from the Yon Augenn Region completing such a high-difficulty mission.
Of course, Shye had other ideas, or rather, he suddenly couldn't mess up due to the notification right in front of him.
[Your next mandatory quest has been posted in the mandatory quests section!]
'This damned old man expects me to slay a damn Phoenix on my first try?!' Shye inwardly cursed.
He hadn't checked the mandatory quest yet, but he already had a good idea of what it would be—and sure enough, he was right.
**