sprite npc sells sprite soda pop which can be given to the sprite to improve its mood 1 level. Sprite npc are in each of the large town and also in the siwa island and the first area you are dropped off at. The sprite NPC looks like a pearl-with-a-swirl on your map. Right click on the sprite crystal on the right side of your screen and choose summon to summon the sprite you want, right click and choose recall to recall. It will also auto-recall when its stamina runs low.