Orianna's W now does incresed the slow and speed boost but has no duration.
Rationale: We thought her W provided a lot of interesting mobility options for Orianna, but we were concerned getting its full effect required a tricky amount of planning and a bit of luck, so we decided to simplify things by front-loading the effects and making it easier to use effectively.
Nidalee's Q no longer a skillshot. Projectile speed increased. Range shortened to compensate.
Rationale: We worried Nidalee's ability to trade pokes in lane was too dependent on her spear, which is single-target, can be blocked by minions and is slow moving. We fixed this to allow her to harass better in lane, increasing her viability across a variety of roles.
Fiora's W now completely a passive:
Rationale: Fiora's a great offensive champion but is crippled but the lack of defensive options, and one of her only defensive moves only has a short window to actually make use of it. We decided to fix this by making the active part of her W a passive that goes up the moment she puts a single point in it, procing on the first attack that hits.