If you got Jar of Ancient Remedies then you know that the use effect grants you instant mana - BUT makes you unable to get the passive spirit buff (Inner Eye) from it for 30 seconds due to:Blind Spot
Simply un-equip the trinket and equip it again - as soon as it is unequipped Blind Spot will wear off and you will once again be able to recieve "Inner Eye" - simply re-equip and ready to go!