What Mordekaiser could've been if he was released in 2015

It's only natural that our beloved immobile No-CC melee mage deserves at least something like this. Now if that feels too op, remember that he is:

1. melee
2. immobile
3. Riot has already taken measures against his damage
4. poor guy was outmeta'd for several years

First part of passive: passive unchanged Second part: if Mordekaiser has full shield up, he becomes immune to knock-ups and backs. That buff persists for 2 seconds if the shield isn't full anymore.

Q - unchanged, but now has a change to execute a minion or jungle monster (only the target he strikes directly) (not Dragon or Baron) if it has less hp (flat, not %) than Mordekaiser (What's about RNG and why? Because you can't be too reliant on it, it just becomes a nice addition for jungle morde)

W - DoT damage removed, bonus magic resist removed, now acts like a thornmail with 5/10/15/20/25% basic attack damage return, DOES NOT STACK WITH THORNMAIL, although target having thornmail gives Grievous Wounds debuff on any thornmail activation. Half of hp cost is regained if cast on ally. ** E - unchanged but half of hp cost is regained if it damages enemy champion.**

**R - range reduced, duration slightly reduced, healing removed, now it's only DoT, but total damage unchanged. Now snares for 1 second and slows for whole duration but only if Mordekaiser stays within 500 range to target. Any healing target receives, instead transfers to Morde (doesn't work on lifesteal/spellvamp). If target dies under the effect of this debuff, an uncontrollable ghost is created which also has target's base movement speed, the ghost starts chasing after the closest enemy champion and if it catches anyone it will die and pass the ult debuff to whoever it caught, then the ult debuff starts anew. If Mordekaiser clicks R while ghost is alive, he will switch places with his ult's ghost (only once per one ultimate cast) **