Simply hunts crystal implings within Prifddinas by using the world hop camp method
Optionally allows you to run around the entire area of Prifddinas to catch them
Ensure you have your butterfly net and impling jars if you are < 90 hunter. If you are >= 90 hunter, bank your net and jars. You won't need them as crystal implings aren't tradeable and you should just be collecting the loot.