Locksmith's Oil 2014
Potion, common
This shimmering oil can be applied to a lock. Applying the oil takes 1 minute. For 1 hour, any creature that makes a Dexterity check to pick the lock using thieves' tools rolls a d4 ( 1d4) and adds the number rolled to the check.
Source: Vault of Magic (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details