Unfortunately crafting was one of the weaker areas of Scion, though it sounds like they're rectifying that in 2nd ed. A hero level Scion could probably craft mundane items (even really advanced ones), but relics would still be out of their league unfortunately. The MacGyver ability is possible, but could as you say end up being overused.<br/><br/>If you wanted to go the crafting route, then I'd say whip up a handfull of items before the story begins, stuff your character would have with them (either on them or stashed somewhere nearby). In downtime scenes, he could (with access to the appropriate raw materials / tools / time) be able to come up with new stuff that he might want to use in the next part of the story.<br/><br/>Does that sound reasonable?<br/><br/>If so, then keep in mind that it is freeform, and simply write with what makes a good story :)