Trist is my AD carry, so of course I've been playing her!
I've been experimenting with my build recently, currently I rush infinity edge after buying a Dorans Blade. If i'm struggling in lane I'll get zerker boots but otherwise it's straight for BF sword
Then I'll go for sheen. Personally I think it's extremely underated on trist: Jump over, hit double damage, e, r hopefully 2 seconds have passed so more doubel damage, jump out with your kill