Islwyn

Islwyn is the grandson of Glarial. Upon completion of Roving Elves he will sell you new Crystal equipment without the need of Crystal seeds. He will sell you a new Crystal bow for 900k or a new crystal shield for 750k. The "new" bow can be traded until it is used once.

Islwyn can be found traveling with Eluned teleporting between the mage tree's outside Lletya and the quest start point for Roving Elves.

Quests that feature Islwyn are the Roving Elves quest and Mourning's Ends parts 1 and 2.