It was made by combining a blue charm with 74 spirit shards and a Shifter charm. This required 34 Summoning and gave no experience. The unfinished pouch could then be infused at a summoning obelisk to make the Void shifter pouch, giving 59.6 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 59.6 summoning experience each.