Blink Strike- fails to land on targets moving in any direction. Oftentimes will lunge and not connect on stationary crouching or airborne targets. Flux Grenades- doesn't deal enough damage to kill max armor strikers, or Defenders running max armor with reduced Arc damage. Also won't kill max armor warlocks with the ram. Arc Blade- Unable to be swung in the air if you activate it from a jump OR get hit off the ground during activation. This forces you to fall to the ground helplessly which more often than not will be death. It also fails to track from air to ground. Enemies are able to clearly see invisibility. Most notably Vex and the Splicer ogre.