Oracle Lens is a trinket item in League of Legends. It is exclusive to Summoner's Rift.[1]

Sweeper Drone icon
The Drone summoned by Oracle Lens item Oracle Lens sweeps the surrounding area, granting Sweeper Drone icon obscured vision of all units within its detection radius regardless of terrain and Exposed icon brush.

Exchangeable with



  • Before patch V8.8, this item was named Oracle Alteration and required a level 9 to purchase.

Patch history

  • Cooldown now scales with the average level of all champions instead of the owner's level.
  • Renamed Oracle Lens from Oracle Alteration.
  • New Effect: Swapping between trinkets now sets your new trinket to the same percentage remaining cooldown as your old one rather than flat 120 second cooldown on swap.
  • Now available at level 1 from level 9.
  • Cooldown changed to 90 − 60 (based on level) seconds from 76 − 60 (based on level).
  • Range increased to 750 at all levels from 660 / 690 / 720 / 750 (based on level).
  • New Effect: Tooltip now displays Vision Score.
  • Removed: Disabling traps. Still reveals them.
V5.22 - Added
  • Oracle Alteration item Oracle Alteration:
    • Recipe: Sweeping Lens item Sweeping Lens + Level 9
    • Active: Summons a drone that escorts you for the next 10 seconds. The drone warns against unseen enemies (including stealth, fog and brush) as well as revealing and disabling wards and invisible traps within a 660 / 690 / 720 / 750 (based on level) radius area. 76 − 60 (based on level) second cooldown.


  1. Itemlist on

List of Items

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