Mordekaiser's Q

Now at first this may seem like another QQ thread, but just hear me out.

Mordekaiser's Q has the highest AD scaling of any champion, and the highest direct AP scaling of any champion on a 4 second cooldown. This allows him to build hybrid items like Hextech Gunblade and make use of them extremely effectively. Also, it is bonus damage, so it doesn't replace the basic attack. Through this, you can build AD Mordekaiser and still do massive hybrid damage because his Q does magic damage but scales with AD as well as AP. It is also good to point out that Mordekaiser has the highest AD per level of any champion. Since his Q is total AD and not bonus AD, he benefits greatly from this. As well as being hybrid damage which disables you from effectively building against it, the regular basic attack portion can crit, resulting in some devastating one shots. To add onto all of this, Mordekaiser is an innately tanky champion. I personally believe tanky champions should not easily do so much damage without sacrificing some tankiness. A core item on Mordekaiser is Rylais. Rylais is an example of a tank item that allows Mordekaiser to do noticeably larger amounts of damage.

Mordekaiser's Q, Mace of Spades, deals 260 (+390% AD | + 260% AP) total bonus magic damage at rank 5. Note that it does bonus magic damage, so it does not replace your attack with magic damage, rather it adds onto your basic attack. At rank 5, Mace of Spades has a 4 second cooldown and a 32 health cost.

Lets take Hextech Gunblade : +40 Attack Damage +80 Ability Power +10% Lifesteal +20% Spellvamp (We will not be needing the passive/active of this item, just the stats)

Mordekaiser has the highest base attack damage at level 18, which is 146.

Here are Mordekaiser's stats at level 18 with Hextech Gunblade : AD : 186 AP : 80 Spellvamp : 20% Lifesteal : 10%

If you would like to skip my calculations, here is the final result :

Mordekaiser's Q does 558 physical damage and 1193 magic damage total. (For a grand total of 1751 hybrid damage.) It heals for 295 damage, effectively healing for 263(295 - 32). SUMMARY : With Hextech Gunblade, Mordekaiser's Q deals 1751 in hybrid damage, heals for 263 in 2.5 seconds(How long it takes Mordekaiser to attack 3 times) on a 4 second cooldown.

MY CALCULATIONS MAY BE WRONG, I HAVEN'T SLEPT IN A WHILE FEEL FREE TO CORRECT THEM IF THEY ARE WRONG

CALCULATIONS 186 * 3 = 558 (Mordekaiser's regular basic attack)

260 + (3.9 * 186) + (2.6 * 80) = 1193 (Mordekaiser's Q)

558 * 0.1 = 55.8(rounded 56) (Lifesteal heal amount)

1193 * 0.2 = 238.6(rounded 239) (Spellvamp heal amount)

56 + 239 = 295 (Total heal amount)

239 - 32 = 263(Effective heal amount) Cost = 32