16 scythe
13 mysticism
Usage is simple....use Wearying Strike, then Signet of Malice to remove the weakness instantly. Malicious Strike is powerful on a scythe hitting for 102 dmg against 60al assuming you meet the requirement, so it's used after Wearying. Although deep wound is already in the build, Reaper's Sweep is still used cause it's an unconditional 42+dmg and it's deep wound requirement is somewhat unreliable in pve. Eremite's Zeal is used to keep your energy up - use it when Heart of Fury is about to end. You can also use it to remove unneeded enchantments that your monks cast on you.
Lyssa Variant:
[skill]Avatar of Lyssa[/skill][skill]Mystic Sweep[/skill][skill]Eremite's Attack[/skill][skill]Wearying Strike[/skill][skill]Signet of Malice[/skill][skill]Malicious Strike[/skill][skill]Heart of Fury[/skill][skill]Resurrection Signet[/skill]
This variant is a much more powerful but sadly is ineffective in hard mode because of the increased casttime on enemy skills

These builds use no healing but assuming you have at least one good monk hero with 1-2 monk henches, that's never a problem. The point is to take full advantage of the damage that a derv can do.