The Moebius Impaler is primarily a frontline GvG build (also usable in HA), combining fast attacks via Flurry with almost no loss in damage (most of which is armor-ignoring "bonus" damage, from Moebius and Death Blossom).
Attributes and Skills
  Assassin / Warrior | Attribute Rank |
| Critical Strikes | 12 + 1 + 1 |
| Dagger Mastery | 11 + 1 |
| Deadly Arts | 6 + 1 |
 |  |  |  |  |  |  |  |
| Leaping Mantis Sting | Exhausting Assault | Moebius Strike | Death Blossom | Impale | Flurry | Dash | Critical Defenses |
Drop Dash for Resurrection Signet if you want; however, the build performs optimally with the above bar.
Also consider dropping Dash for Critical Strike if you're having energy problems.
Equipment
Vampiric, Zealous and Ebon daggers, all 15^50 and of Fortitude.
Usage
Pick a target to pressure. This build is an effective Linebacker, dealing ~60 armor-ignoring damage per second; you can pressure a Warrior just as well as a Monk.
Use Leaping Mantis Sting -> Exhausting Assault -> Moebius <-> Death Blossom.
When your target gets below 50% HP, use Impale.
Counters
Standard Melee counters.
Diversion/interrupt of Leaping Mantis or Moebius, leaving you unable to start (or continue) the attack chain.
Notes
This build is not intended for solo play (be it PvE or RA/TA/AB). You must have monks in your party to stay alive.