When all the Phantoms were killed by one of their own consumed with dark matter the thing dangerous for the Phantoms they where millions of them scattered everywhere in the universe, after they die or get killed a glowing light hovers from their bodies then shoots out into space in high speed causing then to crystallize and crush in planets separate into sharp crystal. What some didn't know or expected to find out is that when the phantom consumed by dark matter died he too unleashed a glowing light but dark with red then scattered through the universe those will be knows as dark crystal soul and will consume innocents thinking they have been choosen. Species who have found these crystal souls dare to touch they will cause a shockwave to keep the not worthy ones away from it only choosen ones can touch them to use their power.
Noone knows where these crystal souls came from or how until they choose a owner or welder they find out how they arrived and where they came from which most welders are shocked but the crystal souls tell them to not to worry about them for they had lived their lifes and only ask for the welder to use their power wisely, if they would ever need guidance the welders can call the phantom. Once the crystal soul has choosen their welder that one gets access to whatever power it has but if some that was not choosen they either get affected by the power of the crystal soul or not get affected at all it will just be a regular sword to them but it all depends on the one holding it.
Whenever a crystal welder dies or gets killed in battle the blade's power will stand by until who ever is nearby to claim its power for her, him or it can be the new owner. The Crystal Soul cannot be fused with anything else only swords or dagers can fuse with it to unleash its first form.
Whenever a crystal soul has been fused the welder's sword or dager has only one form out of four, first form is human or thing, second form Phantom, third form both species and lastly forth form god.
1: Human is the lower form but stronger than the sword or dager it was fused with, this first form with turn the blade weapon into a bigger blade, gun, or both together but they must imagine the weapon in order to form it this takes about a few hours, days, weeks, even months depending with the welders imagination.
2: Phantom is medium form in which the weapon won't be a gun with a blade but only a blade representing a Phantom species they must connect with the crystal soul to unleash its form this can take about two years to master.
3: Both species is high form when both human form and phantom form combine into one but its the most difficult one to master it takes three or more years depending on the bond the crystal soul and welder have together.
4: God is the extremely dangerous form of them all in which human or thing combine their soul with their phantom's soul which can be deadly, if they keep the form for a long period of time no more than a day long because after a day long of that form both human or thing and phantom will perish into dust leaving a blade weapon behind with no crystal soul, but after it has been used for a short amount of time the welder must wait a week in able to use the god form again.