Help me Balance a Zed Rework [Revised]

I took a lot of suggestions from my previous thread, https://boards.na.leagueoflegends.com/en/c/skin-champion-concepts/Xv9d9yBx-help-me-balance-a-zed-rework , and I have decided to implement a lot of your ideas in my own way into the kit to try to balance it. Still open to suggestions and constructive criticism, thank you everyone for already helping me this much.

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(P) Shadow Slash + Looming Shadow Cd: 0 - Shadow Slash: After using an ability, auto attacking will make Zed and his active shadows strike in a circle, dealing physical damage that ignores 50% of base armor. Looming Shadow: When an enemy champion comes in contact with a shadow, they get feared and slowed for 0.5 second. The same target can not be feared twice by the same shadow.

Cd: 6 - (Q) - Razor Shuriken - C: 55/50/45/40 Energy Zed and his shadows throw spinning blades forward (900 units), each dealing physical damage, reduced to 70% against units beyond his first.

Cd: 3 - (W) - Twin Shadows - C: 80/75/70/65/60 Energy Zed stores up to 2 shadow charges, each generating after 14/12/10/8/6 seconds. Activating the ability uses a shadow charge, and makes Zed conjure a Shadow (880 units), which dashes in the target direction and persists for 12 seconds. If Zed has no available shadow charges, all shadows dissapear 35% faster. The closest shadow to zed is active, being able to mimic Razor Shuriken and Shadow Slash while within 1950 units of each other. (Inactive shadows can not copy abilities, and can not proc Looming Shadow, but can be shifted to) Passive: Zed restores energy whenever a shadow lands a mimicked ability on the same target he does.

Cd: 14/12/10/8/6 - (E) - Shift - C: 60/55/50/45/40 Energy Zed switches place with a movable entity, or blinks behind an enemy champion (550 units), aswell as being able to be casted on a shadow (900 units). If activated on a shadow, the cooldown of Shift resets, but that shadow can not be shifted to for 3 seconds. If casted twice on the same shadow, the shadow disappears. This ability is not a blink or dash unless used on champion, considered a shift (bypasses roots).

Cd: 120/90/60 - (R) - Death Mark - C:0 Energy Zed vanishes for 0.75 seconds during which he goes through the enemy champion, marking then, resetting his Twin Shadows cooldown, making all shadows active for 5 seconds, and spawning a shadow at the cast location which lasts for 12 seconds. For the next 5 seconds, the mark stores a percentage of all pre-mitigation physical and magic damage Zed deals to the target, detonating at the end of the duration. Passive: If you kill a marked target, your energy resets to 200 and Shift resets to 0.