Can confirm that /TAR # works on 1st, 2nd, 4th, 5th and 6th  floor. A couple of gotchas and tips though.

A) /tar # will target any named mobs up too instead of the key trigger. Kill the named first.
B) just because /tar # doesnt work from the start of the floor, it doesn't mean the mob isn't up. Try wandering the floor a bit. On at least 1 occasion the trigger mob was in the far northeast corner of the floor and from the start of the floor I was not close enough to hit it with /tar #.
C) Having a tracker who understands how to keep their /track sorted by reverse spawn order will immediately make it clear when you trigger a mob.

6th Floor key mob seems to only be a golem, so kill golems having a kotkey with /tar # will target the golem that will spawn the key cycle mobs

Got the key to floor 3 from "an angrier librarian" not "angrier librarian"

Got the key to floor 3 from "an angrier librarian" not "angrier librarian"

Ok, there is a trick to do when the floor requires you to kill random mobs to spawn a key mob. Type the following:

/tar #

Actually use the pound key, don't replace it with anthing else. To take the first floor as an example, it will target the mob that will spawn "a large frost-bitten gnoll" when it dies. I have personally verified that it works for floors 1, 2, and 5. Probably works for 6 as well, but I haven't verified that one.

One corollary about this. Even if you don't want to use this trick, this also means that if you kill the same set of mobs over and over on a floor, you probably won't spawn the key mob. You need to clear the floor to spawn it, as the key mob might be on the other side of the room that you aren't killing otherwise.

Anyone know how to get in the mirror on the floor of floor 8?

Floor 6b has changed, instead of 2 necromancers, I saw 5 up, 3 in locations that used to have bats before. The necromancer in the key spot was not currently up. My best guess is that you now have the 2 static spawn necromancers, and each bat spot may also spawn a necro or a bat. The bottom line is you can't use track to determine if the 7th floor key mob is up.

7th floor key:
Just to add to what I wrote before. The map is currently wrong. What is marked as the mirror to 7th floor is actually 6b. In addition, there is no key required to click that mirror. Everyone in group will need to click it to go to 6b.

3rd floor key:
There are a couple of superstitions about spawning the angrier librarian. One is to kill the librarian downstairs on a regular basis - that alone won't spawn it, but after killing it, other mobs will be more likely to spawn it - at least that is the theory.

Superstition 2 - killing mobs near the Eastern Wastes mirror exit are more likely to spawn the key holder.

Second Floor Keying - 2.5 hour and not one "Angry Librarian" but plenty of frustrated players. Is there a specific mob type we should be killing? We cycling thru the different ones, but no luck.

Getting the 7th floor key was rather confusing, as we didn't know where to go. So after you have spawned the third shadow beast necromancer:
On map is an entry in the NorthEast for 7th floor. You can get there by going up the spiral staircase. It doesn't seem to be the 7th floor. Click on it, and it will take you to a portion of the map that overlaps the 5th floor (different height though). To the north in this area you will find the 3 necromancers, the one that is furthest to the north holds the key. If it is not up, then you didn't spawn it properly.

P -674.9053, -1000.3286, 71.5309, 240, 0, 0, 2, a_yearning_armored_shadow(roam)_1
P -490.5917, -992.2696, 66.0127, 240, 0, 0, 2, a_yearning_zombie_butler_(_2)
P -489.9053, -1167.6572, 65.8769, 240, 0, 0, 2, a_yearning_zombie_maid_(_7_)
P -431.4998, -892.8997, 72.2512, 240, 0, 0, 2, to_a_yearning_shadow_beast_servant_(_4_)
P -446.8801, -763.3763, 71.5245, 240, 0, 0, 2, a_yearning_shadow_beast_cook__(_5_)
P -867.1869, -739.1998, 71.5221, 240, 0, 0, 2, a_yearning_skeleton_sleeper_(_6_)
P -872.7933, -1060.5253, 71.4368, 240, 0, 0, 2, a_yearning_shadow__(_3_)

The drolvarg guard that you're looking for on the 6th floor for the key sequence is white-skinned (same model as named drolvarg, I believe) whereas the regular ones are a darker color.

It's also not always up, so you may have to clear to spawn it.

For the Key to Floor 7 (Key of Repudiation)

Kill "a drolvarg guard" until you get the emote below:
[Mon Dec 23 15:21:25 2019] A drolvarg guard's corpse crumples to the ground. It's weapon creating a loud clang as it strikes the floor.

This will spawn "a restless shade" in the Northwest room right next to the throne in the middle of that room.
Killing it results in this emote:
[Mon Dec 23 15:30:29 2019] A restless shade's corpse falls. As it does, you hear a loud cackling coming from somewhere else on this floor.

This spawns the "a shadow beast necromancer" on the second half of Floor 6 (past the first mirror). There should be 3 "a shadow beast necromancer" spawns up, you will want the newest one. It is also the furthest north of the 3 spawns.

Kill it to receive your key.

Key of Regret on 6th floor is like the rest of the floors. Murder every thing until you get the emote:

[Wed Dec 18 23:30:58 2019] A golem usher's corpse falls to the ground. As it shatters upon the floor, you hear the sound of footsteps prancing in rhythm.
A Furious Choreographer spawns in the First room to the right from Port up Mirror.

[Wed Dec 18 23:34:54 2019] A furious choreographer's corpse twirls one final twirl before falling to the ground. You hear the sound of instruments being tuned from upstairs.
An Enraged Composer spawns up the stairs on the balcony.

[Wed Dec 18 23:38:54 2019] A maid of honor shouts, 'Who keeps ruining the bride's special day! I will have your skull as a wedding gift!'
Maid of Honor spawns in the Blood pool

Key to the 5th floor is actually:

Kill restless mummy's until you get the emote:
 - A restless mummy's corpse drops to the ground as you see a spirit where it stood. Startled, the spirit floats quickly through a wall towards the center of the maze.
Kill An ascendant adventurer in the middle of the maze, you'll get the emote:
 - An ascendant adventurer's corpse dissipates. You hear a scraping of metal and ice coming from below you.
Drop down the trap near by, kill a rusty armor. You'll get the emote:
 - A rusty armor's corpse falls to the ground and out of it oozes the ectoplasm of a once lost spirit. Within it, you can see a key.
Kill the A heroic ectoplasm that spawns there, you get the Key of Disdain.

It does drop off the named currently but likely isn't supposed to.

Correct name for first key dropper is "a large frost-bitten gnoll." It spawns immediately after ph is killed. Same spawn mechanic was seen for angrier librarian too.

Questions? Comments? Post them here! Original page - https://tov.eqresource.com/tofskeys.php