Patch 12.17 overview
Champions you recently played
No change
Other Champions
Base health decreased. Charm duration decreased early.
W AP scaling decreased, cooldown increased early. E cooldown increased.
Passive shields increased. E damage increased.
E cooldown decreased.
Q cooldown decreased. R base damage increased.
All abilities adjusted.
Q cooldown decreased, mana cost decreased.
Passive, Q, E, and R adjusted.
Q base damage increased late, cast time adjusted. W mana cost decreased, attack speed bonus increased. E cooldown increased, base damage decreased, AP scaling increased, slow now scales with AP.
E electrocute interaction removed.
Base attack speed increased. Passive cooldown decreased.
W dismounted movement speed increased. E cooldown now flat.
Q base damage decreased, AD scaling increased.
W AD ratio increased. E slow increased.
AD growth decreased. W bounce AD ratio decreased.
Base health decreased. Q cooldown increased.
Base magic resist decreased. E cooldown increased.
W cooldown increased at all ranks.
Q AP ratio increased. W mana cost decreased.
Base attack speed decreased. Base move speed decreased.
Items you recently played
No change
Other items

Guardian Angel
Now that Stopwatch is moving up in price, so is Guardian Angel. With stasis being more expensive, players should feel as though they need to deliberately itemize Stopwatch and its corresponding items as opposed to them feeling like auto-buys just because you purchased a Stopwatch.

Seeker's Armguard
Seeker’s Armguard has been a relatively weak component for some time now. We don’t want it to turn into an early anti-assassin item that discourages aggression from opponents in lane, so we’re opting to increase its AP stats so it’s more comparable to other Zhonya’s components.

Stopwatch
Since its introduction Stopwatch has been a powerful item, not only in solo queue, but especially in Pro play with extremely low ping. We’re increasing its purchase price so that if it's bought as a one-time-use item it sets players back more in the gold department.

Zhonya's Hourglass
On the same note, due to the Stopwatch price increase Zhonya’s will also be getting a price hike. Hourglass has remained a cheap defensive option with a value defined by its ability to provide Stasis to its users since Season 10. We’re moving the item up to a higher price point so that its offensive capabilities have an opportunity to stand out more.