League of Legends low popularity Champions modify and improvement

Riot wants to bring back in action champions with low popularity. Now lets see the changes

Champions that their skills will be readjusted :

Poppy, the Iron Ambassador
Rengar, the Pridestalker
Heimerdinger, the Revered Inventor
Warwick,the Blood Hunter
Darius, the Hand of Noxus
Alistar, the Minotaur
Mordekaiser, the Master of Metal
Jayce, the Defender of Tomorrow
Galio, the Sentinel’s Sorrow
Fiora, the Grand Duelist
Zilean, the Chronokeeper
Viktor, the Machine Herald
Shaco, the Demon Jester

Champions that will be improved :
Ryze, the Rogue Mage
Evelynn, the Widowmaker
Karthus, the Deathsinger
Kassadin, the Void Walker
Pantheon, the Artisan of War
Twitch, the Plague Rat
Cho’Gath, the Terror of the Void
Nunu, the Yeti Rider
Singed, the Mad Chemist
Taric, the Gem Knight
Caitlyn, the Sheriff of Piltover
Miss Fortune, the Bounty Hunter
Lux, the Lady of Luminosity