I'm sorry, but the Morde being able to Self-cast W change is bullshit. We wanted it self-cast PRE nerf. Now it has a health cost, does practically NO damage with 1 point in it, and it doesn't sustain for nearly enough to offset the cost. I STILL wouldn't put a point in it
Edit: Just so people know what I'm talking about and don't have an excuse to say I'm just complaining for the sake of complaining, When you're in lane, your main source of being able to sustain off of W will be minions. You're still Mordekaiser, anyone with half a braincell won't go near you and will just poke your ass down from a distance. With one point in W, the math essentially becomes this against minions.
Cost = 25
Damage = 70
Max healing against minions = 25%
70(1/4) x 2 = 17.5 x 2 = 35. Now 35 health seems like a good number when it comes to one point sustain at level 2 or 3, but consider the cost of actually getting that heal. 25 Health. You effectively healed for 10 health.