[Zephyr] always wants to stay in the air. Jump and hold her 1 to float indefinitely. This build gets 84% dmg reduction in the air.
[Boreal's Anguish] and [Fleeting Expertise] are optional. [Aerodynamic] is recommended but optional. You can replace these with [Agility Drift] for dmg reduction, [Augur Reach] for [Fleeting Expertise], and Phisique for [Aerodynamic]. If you have it, [Archon Vitality] helps heat procs with Tornado. Also if you have Rolling Gaurd or another way to prevent status, use it. Turbulence does not prevent status.
Use her 1 to stay in the air
Use her 2 to cc and group enemies, Helminth slot
Use her 3 to deflect projectiles and tank, with enough range you can even defend objectives, keep this up always
Use her 4 to group enemies and do insane damage.
!!Please shoot into the tornado and not the enemies inside!!
[Zephyr]'s passive gives her crit chance while airborne and her tornadoes absorb DOUBLE crit damage, so use with crit weapons. Status weapons also work wonderfully with Tornado. Happy Flying!