Hands are very useful, and they can do loads of things. The one drawback however is that they're not magical, nor mystical for that matter. They can't make rainbows, do spells or fly. That's why the Handicorn will change your whole perception of your hands. Well actually just one Handicorn per pair of hands is ample. Just adourn the four hooves and unicorn head in such a way that it makes sense, that is if anything makes sense anymore. The Handicorn will now prove its usefullness, escpecially when it comes to rainbows and spells.
You get four hooves as per usual, just like a horse, then a unicorn head to complete the look, also just like a horse but without pointy thing or magical powers.