This enhances the senses of the imbiber to a great degree, with many effects:
- (i) A thief gains a 10% bonus to both open locks and remove traps skills.
- (ii) A thief gains a 20% bonus to find traps and hear noise skills.
- (iii) A character's chance for being surprised is halved (usually this means a +1 or +2 on the die).
- (iv) A character's chance for detecting secret or concealed doors is doubled. This may also be applied to detecting hidden or concealed objects. If the DM wishes to use an Intelligence check for this; a bonus of +4 applies to such an ability check. A corresponding bonus of-4 applies to any observation proficiency check.
- (v) A character has a 25% chance to automatically detect invisible or detect illusions (from spells or magical effects below 5th level).
However, this enhancement also makes the imbiber vulnerable to gaze attacks and weapons and also sound-based attacks (such as a shout spell or the roaring of an androsphinx) and all saving throws made against such attacks are at -2. The effects of the potion last for 1d4+4 turns.