Major Artifacts
Elder Wand
The Elder Wand was created by Death for one of the three Peverell brothers Antioch. Death offered him a gift of his choosing for managing to momentarily denying him. In his arrogance he asked for an unbeatable wand and he gave him one. Soon after the brother went and challenged a rival and solidly beat him in a duel. Then boasting of his unbeatable wand his throat was cut in the middle of the night. Then the wands history became a rather bloody one with many of its owners meeting an early and often grisly end.
The Elder Wand provides several advantages mechanically. The wand gives the owner a +20 bonus to any Curses and Counter-Curses check. In addition Charms and Transfiguration checks are made with a +15 bonus. The wand is also capable of using Reparo to fix an object that magical. The wand also possesses some other less nice qualities.
The owner of the wand seems to constantly attract danger and will always have to fear from those who will do whatever it takes to take the wand from them. Also, the wand will not kill it's true owner and any spell that would result in that happening coming from the Elder Wand is cast, but is rebounded on the caster
Time-Turner
The entire stock of time-turners was destroyed in the battle of the Department of Mysteries, but the one used by Hermione Granger was returned at the end of the third year. Hogwarts maintains a extremely small supply of these devices for gifted students short on time. Unfortunately, whoever made these enigmatic devices have either disappeared from the face of the earth or are no longer making them, so Hogwarts may have the only devices left in existence. The Ministry in the wake of Second Wizardly War no longer has the records of these devices, so they go unnoticed… for now.
Time travel has its own risks and consequences. Normal students who go through the proper procedure are taught of its use and are warned explicitly about its dangers. Untrained students are even more at risk: they essentially throw their lives into the hands of fate.
Each twist of the time turner takes you back one hour. The device can take the bearer up to 24 hours back in the past, but concurrently cannot be used for twice the amount of time after. Trips must be planned ahead of time as to not induce paradoxical situations. If you do… well, bad would be a mild way to put it.
A person with official permission to handle these devices automatically succeed at all skill checks related to this item. They do, otherwise they wouldn't be trusted with these devices. Untrained students have to succeed on a DC 24 intelligence check to properly align the time turner for unauthorized use. Unfortunately, for wizards and witches alike, the time turner cannot be used off-grounds.
The Mirror of Erised
This mirror was used to conceal the philosopher's stone from You-Know-Who. After the stone was destroyed, the mirror was kept in its chamber and was slowly forgotten. However, the mirror has lost none of its magic. A character that looks within sees their heart's desire, a exercise between the DM and the player. To avert your gaze from the mirror requires a DC 13 Reflex save. A To turn away from the wiles of the mirror once you look at it requires a DC 14 Will save. Students who fail their Will saves will stare aimlessly at the mirror until they fall over from exhaustion. A distraction, such as a spell or someone speaking, will allow the player a new Will save.
There is one more function of this mirror, left over from when Albus Dumbledore first enchanted the mirror to serve as a last defense. A student who succeeds on a DC 24 charm skill check can hide a object within the mirror. Only the original caster or a student with no desire for the object can take it. The object can be no bigger then the size of a human fist.