Twin cores are rare. The wand can be made from a different wood or a different length as long as both wands share the same core from the same magical animal. If twin cores try to do combat to each other then the wands will not do the desired spell but instead will reverse the last spells that the wands made. If both wands battle the same enemy then both the wands powers increase tenfold.
Known twin wands
|Wand Owners||Core||Core From:|
|Horned Serpent horn||Unnamed Horned Serpent|