Highly intelligent witches and wizards ought to be offered a walnut wand for trial first, because in nine cases out of ten, the two will find in each other their ideal mate. Walnut wands are often found in the hands of magical innovators and inventors; this is a handsome wood possessed of unusual versatility and adaptability. A note of caution, however: while some woods are difficult to dominate, and may resist the performance of spells that are foreign to their natures, the walnut wand will, once subjugated, perform any task its owner desires, provided that the user is of sufficient brilliance. This makes for a truly lethal weapon in the hands of a witch or wizard of no conscience, for the wand and the wizard may feed from each other in a particularly unhealthy manner.
This is the rarest core type. Phoenix feathers are capable of the greatest range of magic, though they may take longer than either unicorn or dragon cores to reveal this. They show the most initiative, sometimes acting of their own accord, a quality that many witches and wizards dislike.
Phoenix feather wands are always the pickiest when it comes to potential owners, for the creature from which they are taken is one of the most independent and detached in the world. These wands are the hardest to tame and to personalise, and their allegiance is usually hard won.