Merchant of Magic. Aurum Kit update

Once again I've taken this champion concept and remade its kit in order to be more unique and relevant to the character, so here is the updated Game play kit for Aurum, the Merchant of Magic.

Passive: Charming Aura. Enemy champions near Aurum receive a stack of Charming Aura every 2 seconds, at five stacks the enemy champions become charmed for 2 seconds and walk towards Aurum harmlessly. Stacks disappear 5 seconds after leaving the abilities range and after being charmed, the affected enemies cannot be charmed again for 10 seconds.

Q: Gold Daze. Cost: 75 mana. Cooldown: 8 seconds. Aurum fires a blast of golden magic that explodes and deals 60/70/80/90/100(+80%AP) magic damage in an area and stuns all enemies in the center of the blast.

W: Shining Armor: Cost: 80 mana. Cooldown: 12 seconds. Aurum covers his body with golden armor, giving him 2/4/6/8/10(+5%AP)% damage reduction for 4 seconds. During this time, damage done to Aurum reduces the cooldowns of his other abilities by 1 second

E: Hand of Midas: Cost: 40 mana. Cooldown: 6 seconds. Aurum’s next basic attack deals 30/45/60/75/90(+20%AP) magic damage. If used on an enemy champion, it also applies two stacks of charming aura.

R: Demon’s Chain: Cost: 80 Mana. Cooldown: 20 Seconds. Passive: When 2 or more enemy champions are charmed by Aurum. He gains “Demonic Aura” boosting his damage by 10%/15%/20%. And increasing his movement speed by 20%

Active: Aurum flings a golden chain out ward and grabs the first enemy champion hit. If it lands, the chain pulls the enemy champion back and deals 40/60/80(+50% AP) magic damage to the enemy champion.