Exexutioner passive needs to be an active instead.
And also effect heals from champs like soraka and Nami.
4 second active where physical damage applies grievous wounds to the target for 3 second would be good for Executioners calling 90 second CD. Mortal reminder should be a 5 second period where physical damage applies grievous wounds for 4 seconds 75 second CD. This allows for windows to punish someone who used the active poorly where a say a Vlad can then outsustain them or the like. The idea is to allow healers and self healers to be useful if they can survive that window of grievous wounds being applied.
A window of 4 or 5 second to make the enemy healers and self healers less useful is far more balanced then always being able to make a mundo near useless but soraka is unaffected.
That will not kill off Soraka or Mundo but would give some kind of way to counter their power that is not too over the top.
only lasts 2.5 seconds and has a 90 second cd, yet apparently it's the most broken item in the game according to non-mage players.

Here are some items that counter Vlad. Notice some of them aren't even expensive.
Master yi - Restores up to 880 health over 4 sec and gives 70% damage reduction. Ok? compare that to your favorite "overpowered broken" soraka.
soraka - Tons of people will disagree with me but IMO Most unhealthy concept i ever saw. Soraka is suppose to be the doctor of the league instead right now she is a vampire that donates and steals health and she cannot heal herself. Ok? Which doctor you know in real life that cannot heal themself? Aint a shame that you are the best doctor in the world and do not know how to heal yourself from a flu that we already know? So you are vampire "Doctor" and you have to go drink some blood to restore your health? SENSE?
10% Max Health cost makes no sense. Its just there so there would be some counterplay to her on top of that she cannot heal herself. She has no mobility, or any kind of defense mechanism. Once focused she dies. Simple as that! She is literally in very unhealthy state right now. That makes sense to build health items like
so you would be able to take some of the burst from enemies
I personally the only thing i can do with soraka is just die and everyone call me useless. I just cannot figure her out and i just straight gave up on her. Before her current rework i played with her but not any more
vladimir - Transfusion - 4 sec at rank 5 on a manaless champion! Sonavabich has low CD on Q, is not even skillshot aka Q on someone for tons of damage and heal, no way to dodge it, no condition on which he is suppose to be healed and with Spellvamp the madafaker is unkillable aka he resotres 40% health with 1 Q. He just didnt have any counterplay at all. Not to mention the Zhonya Trollpool. Basically untargetable for the entire teamfight with low chance for his opponents to fight back. He deserves 99.9999% GW! WIth champions like AP shaco that has tons of mana cost on his spell he cannot trade with vlad at all. And for that reason i also think Nomicon should get buff just like EC. I like vlad alot i played him many times but the madafaker has no counter play.
Nami is one of the worst healers in the game. The best thing about her is her CC Bubble everything else sucks to the max!
bonus movement speed for 1.5 seconds??? Are you fkin serious? What the hell is that suppose to do exactly?
Heal: 65 / 95 / 125 / 155 / 185 (+ 30% AP) - isht that enough prove that the fish is underpowered? 30% ap scaling? Then why champions can do 100% ap damage then? Why dont they do 40% AP damage instead? It costs 130 mana at rank 5!
Why do you even main this champ??? her ult sucks so much that entire parody was made for it. When was teh last time you played nami anything else but support??? Top or mid maybe?
Mundo - without GW mundo is suppose to kill you because Sustain is his primary concept. Building GW is a MUST to counter him
Fiddlesticks - he is a very strange creature. While his Drain is 6 second CD, it damages you it also heals himself the entire fight. Champions without any CC have really hard to answer to that. If you dont have ignite you are screwed not to mention that his Fear is about 2.25 sec! Thats where EC comes in play so you are able to successful answer to that!