Item Concepts

I'm aware that these items i have made have a high chance of being either too gold efficient or overpowered or just plain silly but these are just item concepts because i feel like there isn't much variety and i would just like more, any criticism is accepted because i personally think we should discuss about items.

Ultra Sword: 100-120 AD 3300-3500g Rune Forged Ultra Sword: 150 AD (P) 10% increase of current AD 4000g Refined Tower Shield: 85-100 armor (P)reduces all attack damage incoming by 5-30% by how much armor you have. 2950g Elegant Robe: 70-85 MR 10-15%+ move-speed (A) quicksilver: removes all cc upon use 3100g Zaun Chem Sword: 60 ad (P)Burns target for 5%-15% of current ad as true damage. 3200g Flawless Nexus Shard: 785-950 health (P) all true damage taken is reduced by 25-40% 2800-3000g Craftsman Sight-stone: 700-800 (P) increases all ward range and time and cdr by 30% 3000g Hextech Boots: 40-45 move-speed (A) Wind Bolt: steals the target's move-speed by 25% for 2 seconds 1500g Hextech Gauntlet: 600 Health 90 AP (A) Fury Bolt: Fires 5 bolts in a direct line that deal 50% of your AP and gain 25% increased damage to the same target after consecutive hits Banner of the ruined kingdom: 60 Armor +400 health +40 AS (A) Curse of the lost: Greatly increases the power of a lane minion and grants it immunity to basic attacks 3000g Herald's Fury: 50 Armor +50% AS (P)+20% range increase in all dashes 3200g Mask of Disdain: 50 Armor 50 MR (P) all abilities and basic attacks that strike you will have their healing reduced by 45% and damage reduced by 5% Gem Embedded Breastplate: 70 Armor 200 Health 65 AP Void Creature Leg: 65 AP 35 AD (P)attacks on a target increase your damage to them by 25% if they are below 35% health Blessed Crown: 400 health 35 Mr 35 armor (P) all negative effects last 50% less time on you Sword of the Corrupt: 80 AD (P) Physical damage applies grievous wounds for 5 seconds Dagger of infinite shadows: 35 AD 35 Lethality (P)20 move-speed out of combat/15% increase in damage to targets who are alone/damage bonus doubles if you are unseen Void Carapace: 85 Armor 60 AP (P) after taking a certain amount of damage in a short amount of time your current armor doubles for 4 seconds