Nemesis Destiny
Adventurer
Believe it or not, there are actually people who've made rangers without it. I actually made a bow ranger that doesn't use Twin Strike - and get this - he works just fine. He's using the Hunter class feature and is built around Fading Strike and Careful Shot (kind of a woodland sniper theme). I believe he also has Hunter's Teamwork (to take advantage of the per-encounter Sneak Attack he gets from MC Rogue).But wait! What if you didn't take the Twin Strike power as one of your At-Will powers? There needs to be a version of this for those rangers' players.
Oh, never mind--there aren't any.
(My lovely wife is playing a bow ranger in our family campaign. This seems pretty accurate to me ... I'm not entirely sure what attack powers she has besides Disruptive Strike and Twin Strike, honestly.)
He still does good damage, and rarely misses. I believe he did take Disruptive Strike though. Seemed quite useful.