Forged by the death of the first Daemon Lord. Originally a shorbow with no magical features. The arrow used to strike down the first Daemon Lord was also coincidently the arrow that broke the weapons bowstring. In striking down the first Daemon Lord the limbs of the bow turned blue and the weapon gained a large number of functions. The following being among the most basic.
Holding ones hand where the bowstring would be causes a bowstring to appear. This does not prevent the Quantum Bow from being strung but the translucent blue bowstring is superior to all natural non-magical bowstrings.
Pulling the bowstring with an empty hand conjures an arrow within the Quantum Bow which is also translucent blue in appearence.
The translucent blue arrow may be freely traded out for a physical arrow at the archers will, without them having to move to equip it. The archer does need to know where the arrow they wish to use is located though.
When loosed the arrow fired ceases to exist. A transparent blue shockwave (for lack of a better word) propergating from the front of the quantum bow. This shockwave acting much alike how a normal shockwave would.
At the archers will any surface the shockwave interacts with, at the instant the shockwave interacts with it causes the shockwave to collapse into a point. The collapse of the shockwave resummoning the fired arrow into it’s location.
As the weilder interacts with and uses the Quantum Bow more effects reveal themselves. Weilders capable of firing multiple arrows at once, multiple shockwaves at once, differing shockwave shapes, gaining the ability to shoot oneself with the bow, so on and so forth. The limits of the Quantum Bow, much alike all Artifacts being completely unknown.