Finger Arrow
Editor: Translation Nation
Even though Elrond had lost his magic power, he still retained his understanding and knowledge of magic.
It was akin to how a bankrupt ex-billionaire would still know the most efficient way to get a female star into his bed.
It's obvious that he had made preparations to handle any unexpected situations he would encounter. He should have quite a few magical items on his body. These items were all disguised as normal, everyday objects, but they were all just waiting to be activated.
That's why Elrond was still a monster. A monster who had lost all his magic power, but could still be a physical/magic dual-type through the use of tools!
Alas, man proposes but god disposes. Even with all the preparations he had made, he's almost at his wit's end. It's the time for both sides to lay down their cards on the table.