Dark Knight Simple yet effective buff idea

[Mitzahel]

Hello there, I like to give a simple suggestions for buffing DK to give him a more flow rotations and increase the overall DPS if possible. The last changes was very good, but I like to see some increase on damage overall, big swords should bring big damages right?

1. Flood of Darkness - MP Cost from 3000 to 2000.
2. Edge of Darkness - MP Cost from 3000 to 2000.
3. Abyssal Drain - CR reduces from 60s to 30s or 20s.
4. Carve and Spit - CR reduces from 60s to 30s or 20s.

That's it, thank you!