The VOIDRUNNER'S CODEX is coming! Explore new worlds, fight oppressive empires, fend off fearsome aliens, and wield deadly psionics with this comprehensive boxed set expansion for 5E and A5E!
PCGen allows for custom magic item creation. If you go into the 'Inventory' tab and right click on any item, you can then customize it. Remember though, you first have to add masterwork first, then at least a +1 before you can add any other special abilities (flaming, keen, bane, etc.).