You trigger a Supply ability by using a supply from your bag. You must pantomime using the item with a free hand and count out the activity three times (e.g., to drink a potion, you might say, "Drinking 1, drinking 2, drinking 3"). If you are hit while counting, the ability is interrupted but not expended. Once the ability is triggered, you deliver the effect by throwing a packet or swinging a weapon at the intended target. If the effect is beneficial, you may also deliver the effect through touch or have it affect yourself.