Solo'd as a 105 Bard, EoK t1/t2 group gear, no merc necessary. Easy as cake. Took about 45-60 minutes, cleared all the way to Inny, got insanely lucky and it dropped my first run through. I've heard horror stories about running it 10-15 times both Time and Tacvi each and still not dropping.
Quick Walkthrough
Plane of Knowledge --> Plane of Tranquility --> Plane of Time (click giant sundial in the southeast)
Once in Time, run to any of the first 5 trials (Air, Earth, Fire, Water, Undead). The first phase is easy, you will zone into the trials by clicking on the dial, be placed into a area with a clock blocking you in, and mobs will spawn. Kill them, gate potion out, run to the next trial. Make sure you clear all the mobs in all 5 trials. Once this is done, a bunch of dialogue between the Gods will be seen, and you can click on the clocks to open them into the next area. In the next area, phase two, you go through the clock wall, kill all the mobs on the other side, gate out, and repeat until you clear all the mobs past the clock walls in the trials.
Phase three, once all the mobs are cleared between and after the clock walls, you will run up to a canyon. Jump down, kill all the mobs, run up the ramp, kill the final 2 mobs, and run up to the portal.
Phase four zones you into a room with a door in front of you, there is a lever to the right of the door, click it, go through, and kill all the mobs/bosses. Once you do that, you will see a white/silver spool on the wall outside of the Zek brothers room. Click it.
Last phase, starts you off in a room identical to the one you zoned into in phase four. Click the level to the right of the door. Kill the mobs, this is the room with Innoruuk in it. Kill him, hopefully get your Blade to drop.
Best of luck!
Tierwin - Cazic Thule
Edited, Nov 19th 2017 1:29pm by TierwinTheBard