Selkie Hair

This Heirloom core is fairly unique, as in order to be obtained the Selkie's Skin must first be hidden from him/her, using it as a bartering tool to acquire the Whiskers. Even then they are not common, as the Selkie's Whiskers can only be taken after their skin is returned, most Selkies fleeing before they have to keep their end of the bargain. Most cores are obtained when a Selkie returns the love of a witch/wizard and leaves behind some of their whiskers when they return to the sea, as their nature calls them back no matter how strong their love may be. Another trait that makes them rare is their nigh-absolute refusal to work for those whom the Selkie is not related by blood, as such a Selkie Whisker Core wand bonding to anyone aside from those who can claim a Selkie in their ancestry are so rare as to be counted on one hand. Those who do bond to this wand will be pleasantly surprised, as it is hands down the best core for underwater-spellcasting. The whisker is quite adept at water-related magics, Transfiguration, Occlumency, Legillimency, Potions, DADA (if given willingly), and Dark Arts (if taken forcefully). Though they can potentially be a Dark Core under the correct circumstances, they have an inability to cast the three Unforgiveable Curses, making them the least sought after by Dark Witches and Wizards of all the Dark Cores.