I've read lots of things about how Balance has problems soloing in the mid levels, etc. due to weak attacks. This is only true if you don't have a certain item. This item is, IMO, the single most game changing piece of dropped gear for any mid-level wizard.
I was lucky enough to get this on my 4th run of the place, and its been a huge game changer. This gives you two awesome things: 1) A stackable 30% Balance Blade 2) A stackable 75% Feint trap.
This is a Balance only Amulet.
If you want you can even train Feint or get Feint from a pet as well to stack for super big attacks.
With this, you can kill all mobs in Marleybone with the 2 blades and a Whirlwind (except maybe some Balance mobs). You can also easily one-hit all the bosses in Marleybone with the Feint and your other blades, etc.
This is a big deal because without this you have to use 2 Whirlwinds to kill most mobs in Marleybone and you need at least 2 more pips if not 3 or 4 to one hit bosses with Judgement. This also lets you easily 1 hit Balance bosses with Spectral Blast.
Having this one amulet basically lets you kill in half the time, so yeah, its a big deal and well worth farming for once you finish Krokotopia.
This also gives you 4 blades you can stack on big hitters when teaming up, so it's a great piece of gear. I just got an exalted Death amulet off the secret boss in Olympus with the help of a high (but not max) level Death wizard in no small part due to being able to stack 4 blades, plus my Feint and his Feint and his blades and traps on the boss.