2nd HT Pendant + Egg is now possible.

no, one time means that after using karma scissors you can only perform one transaction on it (selling in a shop, trading, transfer through storage). after that you can use another karma scissors for another transaction.

Oh so that means you can use it an infinite amount of times as long as a new karma scroll is provided each time?

Wouldn't that destroy the point of having untradeable items?
(Also, if they're going to defeat the purpose of having it untradeable, why not extend karma to other items like Versalmas Hats?)