When Kha\'Zix is not visible to the enemy team, he gains Unseen Threat. Unseen Threat causes his next basic attack against an enemy champion or Evolved Void Spike to deal 15 / 20 / 25 / 35 / 45 / 55 / 65 / 75 / 85 / 95 / 110 / 125 / 140 / 155 / 170 / 185 / 200 / 220 + (0.5 per ability power) bonus magic damage and slow by 35% for 2 seconds. Unseen Threat lasts until consumed, and is not lost if Kha\'Zix becomes visible to the enemy team.
opens up options for Triforce or gunblade .. or even both
im kinda fooling around with a gunblade armor pen build my self , seems to do ok you get some nice sustain from gunblade wich commes in handy if your bot. or like me all over the map and regaining hp off minions inbetween fights ( that Q heal)
key items for me are mobility boots , gunblade , brutaliser AND ghostblade
build order , mobility boots -> brutaliser-> bilgewater Cutlass->ghostblade-->brutaliser-> gunblade
imo you dont need to be to tanky if you can jump in explode someone and jump out again or flee using ult i use armor and mr per lvl runes o beef him up a bid over time and filled the rest in with arp runes to increase phy damage and use the pretty much standard 9-21-0 mastery's for a phy damage bruiser derp
( U mad armor stackers ? )