Mercedes

Well, Unicorn spike haves some debuff effect which Lighting edge doesn't and it's stationary so you can continue attacking right after using the skill instead of repositioning yourself in some cases. Personally, I'm about to put the skill on a solitary corner of my keyboard and probably only use it when dealing with boss like mobs (LHC if I ever manage to find a party) and that's if I even remember about the existence of the skill when the time comes.

Shame though, Lighting Edge animation looks badass.

Anyway. I need to know what skills replaces what! Seriously, my keyboard is cluttered. Does Ishtar's ring ever replace stunning strikes? Is high kick demolition obsolete after getting rolling moonsault (I hope not)? How useful is Spike Royale? etcetc.

I replaced High Kick Demo with Moonsault so that's one skill you don't have to worry about. I threw Spikes Royale on a hotkey so I can see when it's off CD and use it again...same with Unicorn Spike. As far as Ishtar's Ring goes, I decided to only throw it on a key when I go bossing, since Stunning Strikes beats it hands down in terms of mobbing (not to mention the passive effect Ishtar has of increasing Strike's damage). I would assume Strikes can still be really good at bosses too (for Zakum Arms and to attack multiple parts of Horntail if you prefer)...but yeah, it's getting hard to figure out where to put things especially since I hate macros lol.