An unfinished build emphasizing every aspect of possible support for others that [Protea] can provide, in addition to doing a decent amount of damage.

[Preparation] is her exilus because you will be using your 4 a lot, and [Preparation] means you can enter the mission with enough energy to begin anchoring on the spot.

You can swap [Umbral Vitality] out for basic [Vitality] with no issues from what I remember. I prefer the Umbrals.

Do not helminth any abilities onto her 1, 3, and 4, as these are all heavily used.

Use your 1 to do a little bit of AoE, but you primarily want it to provide shields to allies.

Your 2 will be used to clear/nuke/dps as standard.

Your 3 is has higher duration and strength to pop out more pickups for longer periods of time. This works with both [Combat Discipline] and [Equilibrium].

[Combat Discipline] will heal your group while draining your life with every kill, that is fine, as your dispensary will provide you with enough health to not worry about it. [Equilibrium] also helps here as every energy pickup can also heal you, and all the healing pickups you use get transferred into energy.

In the case where you are worried about [Combat Discipline], which is a fair concern, you have [Protea]'s 4. She will not die while using her 4 from combat discipline. This way you will not die, and can constantly rewind back to when her energy/health/shields were higher.