It's very strong right now.
Its good on Nasus If you're against an annoying try harding bully but in most cases I don't need it so i just start with
to
asap.
I've been changing my Kled build with the reworked relic shield then i build these items in order

Just regen all that skaarl health and piss off the enemy team when you return back after 10 seconds.
Problem with kled is that top laners and junglers will do everything they can to make you lose skaarl because of his horrible mobility but with this doran shield change i can safely farm minions and just dash away without fearing of losing my lizard.
I now only lose skaarl in mid to late game team fights or when i tp ult gank bot lane. I never lose her in lane unless i get 2v1'd