as most of you (probably) don't know, Shadow of Sven was originally designed by @DSSven. The character was already in the game's files from the point when Chapter 23, along with Sojourner Sorceress, Karaoke King and Last Defender had been added.
This is what Sven wanted his Character to look like:
White: His white would kill the weakest enemy with the 2nd, 3rd, 4th and 5th activation. Gree took this away and added that the summoned Orb stays a short while after Sven dies. Also, his white now "consumes 200 skill energy" - be aware that "consume" means, it COSTS 200 skill energy, is DOES NOT consume energy from enemies.
Green: Nothing changed
Blue: Sven was supposed to heal himself, when his White was activated. They took his healing ability and instead he gets a decent Max HP boost now. However, a healing ability would have been A LOT better in the current meta.
Purple: Sven would have instanty dealt some true damage to enemies who hurt him. This sounds amazing, but Gree changed this skill completely. Instead, Sven now steals energy and gains energy with his white. So he kind of works like a Cyclop/Void-combination, but only if his white is active. This isn't bad at all, but compared to what the purple was SUPPOSED to be it's totally disappointing, especially because Sven's purple was supposed to improve him all the time, now it just helps him when is white is activated.
Oh, and furthermore: Sven already designed a legendary skill for his character: "Judges the worth of his foes - targeting the enemy with the highest power and lowering a random core stat by .".
I dont need to mention that, if you look into the game's files now, Gree didnt bother to add a legendary for him already, they just took it away.
To top it, Gree still uses a hero description in game which is probably old and from Sven himself: "A Front-line hero whose skill deal high magic damage on multiple targets, and possess self-healing ability." As the character is right now, he does not have any self healing ability (just a little life steal for his physical damage).
I see that this character might have been a little OP, but Gree... did you really have to take away so much? Sven doesnt deserve this.
Note: I don't know how to access the game's files, I got these infos from guild mates.