Lying on the groundLoose item spots pick one item from their area's list each time they fill, and Ice Skill Fruit: Icicle Line is on these lists. Chance per spot:The World Tree0.6%690 spotsFeybreak0.4%3,588 spotsSunreach0.4%574 spotsSakurajima0.03%347 spotsShow the spots on the map
Find it on the mapEvery spot from the game files. Open the map to see them all.Skill fruit treesMore are found inside dungeons (4 spots for Skill fruit trees). Dungeons are underground, so those spots aren't on the surface map: go in through a cave entrance or a Sealed Realm.Dungeon entrances
Open your Pal box or party, pick a Pal, choose “Use item” and feed it the fruit to teach that move. Any Pal can learn it.