Exilus:
Uses Dreamer's Wrath, but can also step down to Discipline's Merit instead.

Arcanes:
can swap up the the armor the finisher.

Alternative mods:
Uses [Reach] in lieu of speed mods due to the 1x [Follow Through], so its dmg is not reduced with each enemy you hit.
Also with the paired Valkyr build, you have Warcray up 100% of the time. So you dont need more speed, but you can crack 2.0 if you do.

Valkyr Prime Build
https://overframe.gg/build/620406/