Idea for Tryn Rework (Feedback wanted)

Passive: Any attack speed and crit Tryn buys is turned into armor pen that works vs. towers (Similar to Jhin but with Armor Pen instead of AD and movement speed. Makes his attack very clunky, but makes them HURT especially vs tanks and towers like a real Viking.

Q: Tryn channels a slow charge in the target direction, hitting all enemies he passes by, doing large damage. Can only hit an enemy once per charge. Can be interrupted with stuns, polymorphs, etc. Can jump over small walls (Krugs wall, base-side of Blue, behind Gromp, etc.) Keeping around Tryns dash, but making it clunkier, and able to play around with CC. Good for teamfighting

W: Tryn prepares to enter battle. All the damage he takes within the next few seconds is converted to grey health. He can then gain this back by dealing damage with his spells, and his attacks when ult is activated. _Gives him a retroactive heal. Wouldn't be op with lifesteal because it can only be healed back up with his spells or ultimate autos. _

E: Tryn swings his sword in a direction with a long windup. If you get caught with the outer part it does more damage and stuns, inner part does significantly less damage and slows (think Darius Q and Camille W but rectangle _Big damage ability that can be played around and is practical in a team fight. _

R: Tryn takes massive reduced damage (50-70?) and gains an attack speed bonus and additional damage reduction for every nearby enemy for a few seconds. Would keep the berserker feel of the current ult but makes it healthier to play against (having to pop let at strategic times to avoid the big damage abilities instead of just popping it whenever you're at 100 HP)

I want genuine feedback on this, please tell me if you think it would be op or not, but please don't down vote if you do. Personally I think it gives a fair amount of counterplay, and makes it take skill and timing to actually work out well, as well as having clear weaknesses. Thanks for reading!