You guys, this one should be easy. Let me start:
PASSIVE: Hue hue hue - Nearby allies may cast 
while dead, pausing their respawn timer and returning them to life with full health/mana for the duration of the spell. Additionally, temporarily replaces all summoner spells when a champion is dead, but it may only be cast once per death.
Damnation - You are automatically reported to the Tribunal if you play this champion in Ranked.
Kickstart my heart - if killed, you become a ghost for a few seconds, able to move and cast spells. if you kill an enemy with your ult while a ghost, you consume their ghost to revive you at 50% (+% of AP) of your max HP.
Master of puppets - you gain armor and magic resist for every ally near you (like the opposite of wukong's passive), allies who die near you raise your AP by 15 for 10 seconds (so 4 allies dead= 60 bonus AP)
Iron Man - when 
receives damage to his shield, it is returned to the enemy at 50% of the damage done to his shield.
(THAT is how you make a passive that would be useful for a melee "ADC alternative" riot)
Useless: When mordekaiser dies he turns into quinn and losses the game.
Bound Soul - Mordekaiser gains 3% max HP/5 sec when in bottom lane, and loses the same amount otherwise.
Garen lolol - The champion on your team who most recently scored a kill has 0 armor and 0 MR. lulz.
Skarner lolol - The enemy team gets 5gp10 because reasons.
