Particularly for say, Vayne? Sorry to ask, I'm just not good with numbers when it comes to this game, and I haven't played Vayne in a while, so I wanted to ask before I jump in and start trying to make it.
"Perhaps it's impossible to wear an identity without becoming what you pretend to be." - Orson Scott Card, Ender's Game
a) 50 bonus damage each tumble b) Unit collision is ignored c) More lifesteal by a small margin d) BOTRK will deal less damage after your 3rd silver bolt
I did some quick math and theoretically you'd have a target at 65% after silver bolts with just the passive damage and proc (armorless though), with AA damage factored in you're probably making it worse.