Wrecking Time!
Slowing enemies with Gloom and slicing up your foes will surely end in a blood splatter fest!
Gloom. We know it, we saw it, we love it (despite the cheeky nerf from DE, once again trying to destroy enjoyment in this game).
Gloom is a straight upgrade to her Blood Altar. It is not stationary, can heal yourself (upon damaging enemies - DOES NOT SYNERGIZE WITH SEEKING [Talons]! Just a headsup!) and will, most importantly, slow your enemies the hell down to death.
As simple as this can go, recommended is to use your Garuda as a close combat frame with either a high slash based fast weapon or a simple charge-build [Stropha].
Proc [Energy Conversion] with an energy orb pickup priorly before casting Gloom (as the +25% power strength will sustain during the entire ability run time), as this will be your best friend.
Handle the rest as you are used to do.
As we are passing the threshold of 272% power strength, Gloom will have a potent slow effect of 95% with this build (275% with EC), while you are not sacrificing any kind of survivability for the case of getting hurt badly ([Quick Thinking] + large energy pool + high armor rate + enemies being able to fire (if so) just twice at you in the meantime).
Happy hunting, Tenno.
Best regards,
Pacheon