Fiehonja. During Deeplings stage 1 around 10 spawns exist (here, here, here, here, 2 here, here, here and 2 here. Also may spawn during the gemcutting mission (anywhere here)). Many more spawns in almost all areas of Deepling stage 2 and 3.

Common: Platinum Coin

Uncommon: Great Mana Potion, Great Health Potion, Eye of a Deepling, Deepling Guard Belt Buckle, Deepling Breaktime Snack, Deepling Claw

Semi-rare: Small Sapphire, Heavy Trident

Rare: Guardian Axe, Deepling Squelcher

Very rare: Ornate Crossbow, Deepling Backpack, Foxtail