Banana of Wisdom

On the outside it appears to just be a regular banana, however when a bite is taken out of it, the bite must also include the peal, the consumer will gain one additional point to their wisdom modifier for 8 hours, however, they must also make a constitution saving throw of 11, on a failed saving throw, they throw up, due to the fact that they just ate banana peal and lose the additional wisdom point and cannot take another bite until the 8 hour time limit is over. The banana can have 4 bites taken out of it before it is gone. 

Notes: Buff, Consumable