Oracles Extract
That item should have left the game with Crystal Scar. I feel as if it should be removed or nerfed. It is such an oddball item that can completely remove certain champions from the game. For example Teemo lets say hes hiding to backdoor and they walk past him, normally he would be able to do this but because it only costs 300 gold to have 5 minutes (which is normal a quarter of the game) of Vision of INVISIBLE items it makes teemo unable to play his champ to the fullest. This also affects all other Invis champs and place-down abilities. This either needs nerfed or removed. It is too irregular to have in the game as it can turn a game around for 300 gold.