Arlcard created a shadow clone and summoned a giant blood bat during the fight. This clone and the blood bat never stopped assaulting Eurdrasill who was trapped by Tiemezzys' rock hill. The vampire himself was preparing his rune technique not far away.
Jack ran out of big skills to deal meaningful damage to Eurdrasill. But if Arlcard's rune technique hit, Eurdrasill was for sure finished. He just had to make sure to summon his Runestone of Luck when Arlcard took action. Too bad he had also used his Superior Acceleration spell.
"You are lucky the Necronomicon restricts Eurdrasill," Peniel remarked. "He is a true dragon who has exceptional healing spells. It will be hard to reduce his HP to this extent if he can be affected by healing spells."
"Which makes Master's feat of killing him that more impressive," Jack said. "Uh… This makes me think. Master received exp and loot when he killed Eurdrasill, didn't he?"
"Yes."