If you find four of these knives, you can also find another four. But wait there's more!
This collection is part of a Cascade, meaning that it either contributes it's reward to another collection, or has one or more items that come from another collection. See the text, below, for a full explanation.
Items for this collection are most commonly found in the Southern Wilds.
Find Robgoblin Junkpile <Rare Collection> and collect it to find an item from the list, below.