This is an overall good support Wisp without having to use an umbral forma.

• Energy efficiency is not really an issue. You shouldn't be spamming more than 3 reservoirs at a time. I bring a Sahasha Kubrow (with [Pack Leader]) sometimes if I'm not using the gladiator mod set on my Helios Prime. You can also experiment with different arcanes other than Energize if you aren't worried about energy.
• I use this [Wisp] with Naramon's power strike. I also try to use melee setups that have [Primed Reach] and damage, since attack speed isn't too much of an issue, just as long as you are remembering to run by the haste mote every 30 ish seconds.
• I swapped out Sol Gate because I don't have a ton of efficiency with this build. I tried smite+breach surge and they paired pretty well. It just depends on your play style.

• If you do infuse for a damage or status effect ability, I would equip the decaying dragon key with [Brief Respite] (I put an aura forma on because I was lazy), and shield gating is king with [Wisp] and that combination. Also, you want to have some of the augur mods so that if you have a lot of enemies nearby you can Wil-O-[Wisp] away and restore shields much quicker to reset your shield gate.

This extra part is just part of a different little fun play style I have, there is no need to read any further to use the build if you don't want to.

• I will probably forma my last normal slot to reduce the drain of [Augur Secrets]. Then I will forma my exilus to give me more time in the air, or reduced gravity in the air not only for [Wisp]'s passive, but I messed around with this Zaw build The Clutch Oven Rabvee Riven build when I got a [Rabvee] riven (oof right? I know lol) still fun nonetheless. If you can keep your combo counter up, this Exodia Contagion build can provide a LOT of crowd control, and it can be a lot of fun to use as well.
  Enjoy!