Malphite Rework Concept

as I see him is the poster child for initiation tanks. He gets into a fight and causes problems while soaking up a load of damage. Unfortunately he's pretty outdated at this point and could use some loving to turn him into the monster he could be. This is my attempt to make him a beast of a champion outside of just his ultimate while preserving his initiation and anti AD niche. I may have made him a tad OP but hey I just wanted to make a fun kit that would feel amazing to play with and really sell the unstoppable armoured earthen giant fantasy.

Passive: Stoneskin A percentage of Malphite's current health is gradually converted into Stoneskin while out of combat for a few seconds. Malphite's armor is increased while Stoneskin remains active, but he gains base AD while it's not active.

Q: Fissure Slam the ground causing a shockwave to erupt from the ground in a line. The shockwave deals physical damage and slows enemies in, with the damage and slow going down the further the shockwave travels. The first enemy champion struck is Stunned.

W: Unstoppable Force While Malphite has Stoneskin active, increases his armor further and makes him unstoppable for 2.75 seconds. While Malphite's Stoneskin is not active, he gains attack speed and becomes unstoppable for 2.75 seconds.

E: Erupt Malphite goes underground, becoming untargetable for a few seconds and gaining bonus movement speed and the ability to pass through terrain. Once reactivated or after 2.5 seconds, Malphite will burst from the earth to deal damage to nearby enemies and knock them up for 1 second, dealing physical damage.

R: Tectonic Shift Malphite slams the ground, causing a stone wall to appear a set distance in the target location that blocks movement for 1 second before being pulled towards him, dealing damage to all enemies hit and dragging them directly in front of him.

Feedback is much appreciated ~