Perhaps a Simple DRK Solution

[MagiusNecros]

Yeah, the reason I feel it should retain the damage with the Voke if that were to happen is because it would be on GCD, so you wouldn't be able to hit them immediately like you can with Voke. Power Slash would be another good candidate, the only downside to it would be the lack of range, but with Plunge on 30 second cooldown it could still work with you just ninja flipping over to them and using the Power Slash.

Personally I dunno why the DA effect is Enmity multiplier of 6.5 over 5.5 normally. Should just make it a Provoke attack.