Light creatures are level 88 Summoning familiars. They give a passive 10% chance of instantly converting harvested Divinationmemories outside of Prifddinas. When the instant memory conversion activates on a harvest, the energy for that gather is lost.
Using an Enlightenment scroll increases the usefulness of the Light creature familiar by providing the player with benefits to agility, divination, and Tears of Guthix.
Light creature pouch
A light creature pouch is made by using a Summoning pouch on a Summoning obelisk with 204 spirit shards, a blue charm and a Light core in the inventory. Making the pouch earns 771.6 experience points. Using the pouch to summon a Light creature gains 9 experience points, and costs 10 Summoning points. Each pouch summons a Light creature which stays alive for 60 minutes before needing to be re-summoned.
In order to gain the benefit at Tears of Guthix, you must summon the familiar and use the special move before talking to Juna, as the familiar will disappear while you are in the cave, only re-appearing when you emerge.
On average, a light creature familiar with the enlightened buff will give the fastest experience for normal divination training, at the cost of having to bring scrolls and missing out on the energy. If one prefers not to bring and use enlightenment scrolls or wishes to collect and keep more energy, a Nightmare muspah should be used instead.
This article on a Summoning familiar has an associated dialogue page. Click here for a transcript of possible conversations with this familiar.
Every now and then the light creature (familiar) will say "Lum!". This probably a reference to the "Lums" from the "Rayman" games