[Rework Concept] Mordekaiser, the Iron Revenant

Mechanical Goals: Level out the utility for Mordekaiser's ultimate, enable the usage of sheen items with Q, rework W entirely (and give it more synergy with Passive), and leave Passive and E as is.

Lore Goals: Leave Mordekaiser as intact as possible. (because, hey, who doesn't love the 4th-wall breaking Metal aficionado?)

(optional) Resource: Mana instead of Health/Shield (notably this goes against the concept of 'metal' brashness, but overall league does not reward brash behavior).

Passive - Iron Man: Keep as is.

Q - Mace of Spades: Change to a charge system similar to Taric's heal (Q or E I believe), where at max charges it deals 4x (quadruple) damage as opposed to 3x (triple) damage (same amount of damage overall currently, not counting base attack damage, but allows a 1-charge Q to be used with Sheen more effectively despite Mordekaiser not having mana).

W - (name change): Explodes passive shield, dealing scaling base damage + shield health + AP scaling magic damage in an AoE. If shield is over 50% full, knocks back any enemies a short distance.

E - Siphon of Destruction: Keep as is.

R - Children of the Grave: ...Passive - Dealing damage to epic monsters curses them for 10 seconds. ...Ultimate - Keep as is, except instead of a clone of the cursed champion/monster, create, for lack of a better phrasing, Iron Maiden's mascot Eddie as a pet.

Alright, I know this is rushed, but I'm rushed myself before work and stressing out, so, my apologies.