User blog comment:Sjjtitan2019/Itemization and Build Paths/@comment-12314620-20140108222555

There are 2 reasons some adcs prefer BotRK. First the active is very good if you need to peel for yourself. The second reason is the passive shred which works really well if against a tanky team. As long as your target has more than 1,5k (current) health BotRk practically improves your AA damage more than a fully stacked BT. Therefore it's a good item on AA based adc (adcs can be roughly divided to caster like adcs examples being varus or ezreal and AA based carries like twitch, tristana and vayne) especially on AA based carries BotRK is often a better pickup if you have trouble dealing with enemy teams tanks (shreds Mundo better, helps kite Shyvana etc.). Draven fits more on caster type though since his Q scales so well with ad and is his main source of damage...