Cursed Blade
I want to talk about this item, because it's surely too ap atm.
"Attacks have a 20% chance to Reduce enemy's star level by 1"
It means that a sinlge enemy unit can potentially reduce all your team to 1 star if you have really bad luck.
25 % chance is way too much and I have an idea to stem this problem: make the item passive works only 1 time on a unit and reduce the chance to 15 %.
In this way, your two star Lucian with three items can try to continue to fight, instead of being single shotted by a three star Volibear with Cursed Blade.
What do you think?