I had the following build on Abaddon:
  • Metamorphosis

  • Conjure Image

  • Jinada

  • Walrus Punch

The issue was that when I Metamorphosized, my hero wasn't able to do ranged attacks, instead running up and doing a melee hit (with Abaddon's traditional attack noise too). However, his Cunjured Images were able to do the ranged attack. So perhaps it's just something with the way Abaddon works?