
focus on clear worry about poking out the other mid if u have already cleared wave or look for farm else where you are a mid you scale.
if u dont need divine soul reaver and soul gem are both good swaps, you can also go combat blink depending on the game.
reaver over divine if you dont need anti heal
soul gem is another good option if u don't need anti heal
totem could also just be correct in this slot if u want team pen or if you just proc it well