Ed disassembled his suffocation trap. In the process, he got a brand new robe.
[Storm Robe]
Facilitates the travel of mana through the air resulting in faster cast time and reduced mana loss. Storm spells receive a noticeable boost in power.
He had forgotten about the adventurer who ran away so it was only natural he missed this robe.
'I am quite surprised he owned such a thing' To Ed, the only explanation as to why he didn't notice anything was that this adventurer either didn't know himself, or he had no storm spells and therefore couldn't make use of it.
'He did deviate my attack when I nearly killed the Felix fellow so he likely knew' Under normal circumstances, no one should have been able to divert his sword unless they anticipated such an event. That is to say, the burst of wind was cast quicker than it probably should be.