The Arkenhammer and the Arkendish both have multiple abilities in addition to the creation of units, so it might be possible that the Arkenpliers have other abilities in addition to its (admittedly gamebreaking) decryption power. The Arkenhammer's other powers are essentially unrelated to its core dwagon taming ability, and the Arkendish's thinkamancy capabilities are unrelated to its mass archon creation, so the other powers might be impossible to guess, but it might be worthwhile to try.