Rat King Catalyst

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Rat King Catalyst
Rat King Catalyst icon.jpg
Name Rat King Catalyst
Season 6
Type Catalyst
Rarity Exotic
Related Item Rat King
Description This weapon generates Orbs on multikills and displays the number of enemies defeated by using it. When upgraded to a Masterwork, this weapon receives additional bonuses.
Source Found in strikes against the most challenging opponents.

Rat King Catalyst is the Catalyst of Rat King. It gives the Rat King the Infestation perk.


  • Infestation icon.png Infestation — Improved aim assist and recoil direction. Refreshes health on Vermin invisibility trigger.


This item can be found randomly by completing Heroic or Nightfall Strikes.

Its upgrade is unlocked by having a member of your fireteam defeat 1000 enemies with the Rat King.

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