This build is focused on using a [Glaive] as the DPS weapon, and Zephyz has several ways to boost this weapon

1) Her passive: grant additive 150% Critical Change while airborne. This includes melee weapons.

2) JetSteam increases the speed of projectiles, this includes thrown melee weapons. More speed = more range.

3) Air Burst is a grouping tool that can proc status (50% chance to proc IPS with priority to slash). This not only adds damage but acts as a [Condition Overload] primer (either the Galv mod or CO)

4) Her Tornado's double critical damage and distribute 100% total damage (including Critical Hits) and Status Effects. This double dips with AoE attacks (like glaives heavy attacks) by damaging the target and the tornado at the same time. oh and it of course is a grouping tool too.

I have replaced her 1 for breach surge. Tail wing does not allow for melee attacks and was counter synergetic for this build. Breach surge offers a blind (7x stealth damage) as well as additional damage from the sparks (3x for this build). Also while in a tornado breach surge, sparks are constantly proc'ed.

Boreal's Auguish is a must for this build Aero Vantage is a must for this build. It allows for double her passive hang time, longer aim glides and can throw the glaive 3-4 times before you drop, at which point you put 5 foes to sleep (additional CC). It also allows you to do dodge rolls which adds to her defence in the air in addition to the 20% Damage reduction.

Edit: Added Prime Cont and [Rolling Guard]. More duration was needed and [Rolling Guard] is useful because you are aim gliding, not Tail wing hovering.
Edit Edit; Add Boreals Augish instead of [Aero Vantage], added [Combat Discipline] and Arcane avenger. Pair with a [Life Strike] [Glaive].