There are two ways to be recognized by the Origin of Emerald.
The first is to formally ascend the throne with perfect rites, and the power of the Origin will accompany the crowning with the crown.
The second is subject to Its mood, and if one day It takes a liking to a down-and-out ordinary Elf, perhaps It will grant a portion of Its power, after which, for that Elf, the difference in caste and status would be as if heaven and earth had turned upside down.
Legend has it that someone who hunted a Variant Elf received the Divine Tree's blessing in a dream, which is why so many Elves are passionate about hunting Variant kin to offer to the Mother Tree.
Lisiti, as one of the daughters of the last generation's Elf Emperor, although she had not been crowned, was fortunate enough to receive a portion of the Origin's power, and even the power she wielded, under normal circumstances, was only slightly less than that of Kureya, the current Empress.