Idea for Skarner's "rework"

I based myself on a older thread. I wanted to give my own idea for this. I don't think we want a full rework, just more of an update on a old champion. Please consider it Riot. If my idea is bad then look on the thread bellow. https://boards.na.leagueoflegends.com/en/c/gameplay-balance/yJnMYuwk-skarner-rework-proposal

Stats: Increase health regen a little bit, decrease his health.

(Passive) Crystalized body 20% of Skarner's max health is converted into a shield. Over 5 seconds in combat Skarner builds up to 20/30/40% movment speed. Shield regenerates when out of combat over 8 seconds. Regeneration starts after 3 seconds out of combat.

Q - Gemcutter Cost: 30/35/40/45/50 mana Cooldown: 6/5.5/5/4.5/4 seconds Skarner cuts every enemy around him for 30/34/38/42/46% of his AD as physical damage. Auto attacks reduce the cooldown of Gemcutter by 0.5 seconds. This attack regenerates 33% of Skarner's shield. If his shield isn't destroyed he also deals 20/30/40/50/60 (+40% AP) as magic damage.

W - Fracture Cost: 80/90/100/110/120 mana Cooldown: 14/13/12/11/10 Skarner's crystal skin fractures. He removes his shield and cleares himself of all CCs affecting him. For 3 seconds Skarner has increased movment speed by 38/46/54/62/80%. During this time he has increased attack speed by 30/45/60/75/90%. (If his shield is destroyed you can't lose it but Fracture still works)

E - Crystal Wave Cost: 60/65/70/75/80 mana Cooldown: 10/9.5/9/8.5/8 Skarner slashes air with his tail. He sends out a projectile which deals 70/95/120/145/170 (+80% AP) magic damag and slows them for 30/36/42/48/54% for 2.5 seconds. Projectile passes through enemies applying Crystal Overload to them. If Skarner attacks enemies with Crystal Overload he deals 10/15/20/25/30% of his AD magical damage and stuns them for 1.5/1.6/1.7/1.8/1.9 seconds as well as giving Skarner 30/35/40/45/50% attack speed.

R - Stinger Cost: 100/130/160 mana Cooldown: 200/175/150 seconds Passive: Every 3rd attack slows enemy for 20/25/30% movment speed for 0.5 seconds and deals 40/60/80 (+10% AP) over 3 seconds. Active: Usable only when an enemy is under the effect of Stinger's passive poison. Skarner stuns a target and drags him around for 3/4/5 seconds. During this he can't gain any movment speed buff except his boots. Stinger deals 100/150/200 (+100% AP damage) and after the effect ends it deals 40/60/80% of his AD as physical damage. Don't make me beg Riot

My Crystal Boy will even bake you some cookies.