Hey, I wanna help too, and after reading the posts I got an idea of how we could include the orcs, what if the orcs are what cause the angels to flee? Like they had this war and the orcs won. And now they wish to conquer even more territory so they are coming to this continent trying to enlarge their empire? They also could use this magic that in this continent they don't know that consists in drawing runes in a weapon giving it a special property, for example a sword has this rune that allows it to release a high pressured blade of air 10ft away when it stabs (even if it only stabs air). And they didn't need to be green, just really bulky humans with large exposed canine teeth.