It was made by combining a green charm with 140 spirit shards and a Unicorn horn. This required 88 Summoning and gave no experience. The unfinished pouch could then be infused at a summoning obelisk to make the Unicorn stallion pouch, giving 154.4 Summoning experience. Any leftover uncharged pouches may still be converted in experience. Clicking one in your inventory prompts a warning message saying: "this item no longer has use. Convert it and claim the xp contained within?". Choosing 'Yes' will convert all pouches in your inventory into 154.4 summoning experience each.