Apex Inventor

Per level³

• Pair Apex Inventor with Heartsteel and Unending Despair.⁴
• Pick Apex Inventor after one or two items.⁵

• Call Lightning benefits from Apex Inventor, while automatic effects from augments do not.⁶⁷ Patch unknown
• Goredrinker can fully heal a Rengar with Protein Shake and Apex Inventor on a cooldown of about 5 seconds.⁸
• Apex Inventor can reduce Heartsteel and Unending Despair cooldowns.⁴
• Apex Inventor reduces Blade of the Ruined King's slow cooldown; the only effect it affects on the item is the slow after three attacks.⁹¹⁰

• After Parasitic Mutation changes into Apex Inventor, Lich Bane can go on an extremely long cooldown. Selling or refunding the item does not fix it, and it is unclear whether it works again that game.¹¹¹²

• Since patch 26.10, Pull Their Strings benefits from Apex Inventor.¹³

Earlier formats

• Apex Inventor reduces Gambler's Blade's cooldown.¹⁴ 8x2 duos
• Reality Fracture's grubs apply Tahm Kench's passive when he has Ethereal Weapon, Apex Inventor and Minionmancer.¹⁵ 8x2 duos
• Apex Inventor reduces Ghostcrawlers' cooldown.¹⁶ 8x2 duos
• Apex Inventor with Zhonya's Hourglass can reduce its cooldown to 5 seconds.¹⁷¹⁸ 8x2 duos
• Orbital Strike's cooldown remained 20 seconds with Apex Inventor.¹⁹ 8x2 duos
• Apex Inventor with Imperium Promise allowed abilities to be cast mid-cast, putting Imperium Promise on a 5-second cooldown.²⁰ 8x2 duos
• Apex Inventor with Wooglet's Witchcap, Reality Fracture and Luden's Echo made Reality Fracture and Luden's Echo proc every 3 seconds.²¹ 8x2 duos
• Unending Despair's area-of-effect life drain had a 1.5-second cooldown with Apex Inventor.²² 8x2 duos
• Apex Inventor worked with Lightning Rod.²³ 8x2 duos
• Apex Inventor doubled Pyromancer's fire orbs.²⁴ 8x2 duos
• A Garen build with Apex Inventor used Slow Cooker, Transmute, Blade Waltz, Tank Engine, Dragonheart, Heartsteel, Redemption, Unending Despair, Gargoyle Stoneplate and Ghostcrawlers.²⁵ 8x2 duos
• A build with Apex Inventor used Heartsteel, Unending Despair, Spirit Visage and Radiant Virtue, with Dr. Mundo or Sion as possible champions.²⁶ 8x2 duos