so, i have been playing with the pet system lately and i noticed that every skill have a level.
LV1 NPC Teleport use 80vp and LV2 NPC teleport only use 50 (idk if lv 3 or more exist but maybe lv 3 will be 30, and lv 4 10 or even zero VP)
the question is...how to level up a skill?