"The Head Trader in Charge," Ezra answers "Is a... entity that wants to preserve magic and figured out that it is harder to destroy things in multiple universes," Ezra shrugs "that is what the other traders says, but as far as deals and pacts go they have never been caught on a lie, not even misdirection, translation magic doesn't handle misdirection well among different species."

"Oh, Teleportation powers often have..." Franklyn launches on a complex explanation that involves too many physical terms and thaumatological terms to be understood, he will stay that way until interrupted. It does seem to boil down to "teleporting is safe or doesn't happen".