Master Thief

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Polarity Bar
Rarity Rare
Dropped by Grineer Scorpion
Hyena Pack
Corpus T3 Defense Reward
Tenno Specter

Master Thief grants a chance of unlocking locked lockers. Upon approaching a locked locker (with a red light) the mod automatically tries to make it unlockable. If it works, you'll see a blue light, hear a hissing sound and the light will turn green, allowing you to open the locker.


Rank Effect Cost Conclave
0 10% 10 C1
1 20% 11 C1
2 30% 12 C1
3 40% 13 C1


  • This mod can be very useful when trying to farm resources or Nav Coordinates since lockers have a chance of dropping them.
  • A good place to search for this mod is on Pluto (Narcissus and Outer Terminus), since the tier 3 defense mission rewards start on wave 5 on these maps (Master Thief is a tier 3 corpus reward with a 2% drop chance 1).
  • Can be acquired through Transmutation.
  • Can be acquired on Venera, Venus wave 15+
  • Can also be acquired on Olympus, Mars wave 15+
  • Lockers in the Orokin Void are affected by this mod. This can be helpful in finding the rare Argon Crystal.
  • The effects of this mod do not stack when multiple players in a party have it equipped. If a locker fails to unlock when Master Thief is applied to it, it will not unlock if other players with the mod equipped also try on the same locker.


  • It seems multiplayer lag can make this ability skip over lockers, thus going back and waiting a second by it can get a successful unlock.
  • After getting knocked down you will sometimes be unable to open lockers at all, it seems crouching and then blocking fixes it occasionally, same as waiting a minute or getting knocked down again.
  • Blue light and unlock sound appear to not show up unless you are host.


Master Thief

Upon coming in contact with a red box, there is a chance of it being unlocked if you are equipped with Master Thief. If successful, there will be a small hissing sound and the box will glow blue if the area is dark enough.

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