I'll answer here for your 3 posts :
Doram changed a lot since the beginning at first he had only half of his skills etc, the video you're linking is from July 2016, we're in 2018. There is no reason we should add a cool down and cast on those skills, they already are useless and expensive in sp. Doram already has been nerfed too much please stop ruining my fun on LimitRO.
Every wiki about Ragnarok shows:
Cast time "none"
Have a nice day and nerf it if you want but you won't see any physical dorams anymore