I don't know I've just been brainstorming items for a MOBA in general, but ehhh I can put them down here and let them leave my mind for good. I guess.
+200% Health Regen
Unique Passive: Regenerate 2% of maximum health per second.
Unique Active: Cleanse all Crowd Control and debuffs on you currently. Gain 20% Damage Reduction for 5 seconds, immunity to CC for 2 seconds. 60 second cooldown.
World Eater's Breastplate
+40 Magic Resist
+100% Health Regen
Unique Passive Predator's Jaw: Upon a takedown heal for 30% of maximum health. 5 second cooldown.
Unique Passive Wounds Reseal: Become immune to Grievous wounds when reaching less than 30% Max HP for 5 seconds. 50 Second Cooldown.
Shield of Invincibility (Range Restricted to 375 or below)
Unique Passive Precision Guard: Take 20% reduce damage from all range attacks. Heal 50 (+10 HP per level +5% missing health) over 1 second upon receiving an auto attack. 5 second cooldown.
Deathmaw Scepter (Range Only)
+30% Magic Penetration
Unique Passive Death Awaits None: Upon casting a spell gain a stack of Deathmaw. At 5 stacks your next spell deals 100% more damage and ignores 50% magic resist instead. If you kill using Deathmaw's passive reduce the cooldown of all basic abilities by 12 seconds.
Dryad's Ring (Jungle Item)
Unique Passive: Take 50% less damage from Jungle monsters.
Unique Passive Watcher's Eyes: If an enemy champion enters your Jungle you are notified of their location for 5 seconds. 120 second cooldown.
+10% Magic Penetration
Unique Active Magi's Blessing: Cleanse all crowd controls and debuffs on you currently. Gain 50% increase movement speed. 35 second cooldown.
Armor of The Juggernaut
Unique Passive Unstoppable: Gain a spell shield every 20 seconds; upon being hit by Crowd Control gain immunity to it for 2 seconds and gain 100% increase movement speed.
Ring of Everlasting Life
+200% Health Regen
Unique Passive Life Essence: Increase your maximum health by 10%.
Unique Passive Maximum Vitality: For every 500 bonus HP, gain 2% more maximum health (Does not stack with itself).
Armor of Invincibility (Range Restricted to 375 or Below)
Unique Passive Steel Plating: Take 50% less damage from range attacks. Heal 100 (+20 per level + 10% missing health) over 1 second after being hit.