With the new mythic tristana is an absolute monster on single target dps, easily melting any enemy. Her E makes her scary at team fight as the aoe damage is pretty massive with the collector executing any below 5% if the aoe touches.

Hail of blades makes tristana attack speed pretty insane with her Q already giving a massive boost. Overall tristana adc kit is a great balance between escape, engage and damage potential making her one of the best adc this season.

Choice of item varies after IE purchase depending on enemey with tanky teams or lots of lifesteal pick accordingly to what you need. As long as you have the first 3 items you are good to go and fight most fights!