this build offer you and your mates to deal crazy damage with a squad of raynor + 2 between: falstad, valla, sylvanas, tyrande, tychus.
additionally raynor is quite resilient and fast moving, with a heavy shot when needed and when you get "nexus frenzy" your damage rate is really high. hyperion is the perfetc ult for this buffing man, capable of turning battle to your favor and demolishing defense, afterall there are two others range assassins that have to make the most of damage (thanks of your "W"), so you needn't to take banshees.