Malphite Rework Idea {Top Of Head Post]

This build is meant to boost Malphite's overall role as both a Tank and a anti-ADC. No haterino, just comments

[Q] - Malphite throws a stone shard at the target enemy unit to inflict 40/80/120/160/200 (+6/6.5/7/7.5/8% Max HP) magic damage and Slow them by 15/18/21/24/27% for 4s. Malphite gains 10/13/16/19/21% bonus Movement for the same duration on hit. <Mana> 65/70/75/80/85 <CD> 8

[W] - Malphite's basic attacks passively inflict bonus physical damage equal to 2/3/4/5/6% of the target's Current HP, with a minimum of 10/20/30/40/50 flat damage. Enemies within 200D of the target take 20/35/50/65/80 (+1.5% Max HP) physical damage in splash. On cast, Malphite inflicts an additional 15/30/45/60/75 (+3% Max HP) physical damage and reduces the target's Damage Output by 10/12/14/16/18% for 4s. <Mana> 90 <CD> 18/16.5/15/13.5/12

[E] - Malphite slams the ground after a 0.5s delay, inflicting 20/50/80/110/140 (+5.5% Max HP) physical damage on all enemies within 400D and reducing their Attack Speed by 15/20/25/30/35% for 4s. <Mana> 70/75/80/85/90 <CD> 10

[R] - On first cast, Malphite becomes immune to all incoming CC effects for the next 4s. If recast within 4s, Malphite surges along a fixed 550D line in the cursor direction, inflicting 200/275/350 (+15% Max HP) magic damage on all enemies along the path and knocking them upward. <Mana> 150 <CD> 140/125/110

Ability "Granite Shield" - Malphite resists extra physical damage on top of Armor values equal to 1% Max HP