Random item ideas I came up with (Would love criticism and opinions)
(I can't draw for the life of me, so I couldn't put artwork for the items, sorry >~<)
Doom's call - 3200 Gold:

85 AP 15 Flat magic Penetration
UNIQUE Passive: Your magic damage deals 5% bonus true damage
Arcane Shield - 2700 Gold:
+
+40 Magic resistance +30 Armor
UNIQUE Passive: Awe: Refunds 15% of mana spent
UNIQUE Passive: Mana charge: Grants +4 mana for each spell cast and mana expenditure and upon taking damage. (Occurs up to 2 times every 8 seconds). Transforms into Arcane Guardian at +750 mana
Arcane Guardian
+40 Magic resistance +30 Armor +1000 Mana
UNIQUE Passive: Awe: Refunds 15% of mana spent
UNIQUE Passive: Mana Shield: 10% Of damage taken reduces mana instead of HP instead. (Only occurs while mana is above 20%)
Bloody Necklace - 2500 Gold:
+
+ 
+300 HP +30 Armor +10% Cooldown Reduction
UNIQUE Passive: 15% Of damage taken is transferred to Nearby Allies for 3 Seconds
Throwing Knife: 100 Gold
Active: Throw a small knife, dealing 50 Physical damage to all enemies hit by it. (Picture
passive with smaller range)
Can have up to 5
Hextech Repeater - 3600 Gold:
+
+
+50 Attack damage +30% Attack speed +30% Critical hit chance
UNIQUE Passive: Critical hits Apply flat on hit damage twice
UNIQUE Active: Gain +30% Critical hit chance and +20 Attack damage, but reduce critcal damage dealt by 10% for 5 seconds. (40 Second cooldown, applies to other hextech items as well)
Elemental Cap - 3200 Gold:
+
+ 
+300 HP +25 Armor +25 Magic resistance
UNIQUE Passive: Disruption: You take 5% Reduced damage based on how many nearby ally and enemy champions there are. (Note that you do not count as a nearby ally champion) Disables Immolate
Examples: 1 nearby ally champion, and 3 nearby enemy champions = 10% damage reduction 0 nearby Ally champions and 4 nearby enemy champions = 20% damage reduction
TD;LR: Picture
Passive.