Chalice of Detection (Magic Chalice)

This cup appears and functions as a chalice of colors. In addition, however, if it comes within 30' of poison, the water in it turns a murky green. Poisonous monsters, traps, arrows, and gases all trigger this response. After use, the water remains green and the chalice must be refilled in order to detect again; however, any drinkable water may be used. The chalice detects poison three times per day at most. Once each week, the chalice can be commanded to produce an antidote; the green water then turns pink and becomes a potion that negates the effects of the poison detected. When consumed, the antidote prevents any of that particular poison from affecting the user for one turn (treat as a successful saving throw). 
Category:Encyclopedia Magica Magic Items
Category:Magic Items
Category:Magic Chalices