Tom is a Maia.

Cards only do what they say. No more, no less.
If it’s not in the rulebook or CRD, it’s not a rule.
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I saw a really large discussion somewhere, I think tOO posted it. can’t remember what it concluded...

Hey SoP, now I see how you managed 5000+ posts. Great contribution to the site!!

I think he’s some Vala or Maia. The Silmarillion says that each (or most) of the Maiar and Valar had a "Female" counterpart. That explicitly matches Tom.

But, the Q is, which of the Valar (or Maiar) is he?

In the beginning Eru, the One, who in the Elvish tongue is named Ilúvatar, made the Ainur of his thought; and they made a great Music before him. In this Music the World was begun; for Ilúvatar made visible the song of the Ainur, and they beheld it as a light in the darkness. And many among them became enamoured of its beauty, and of its history which they saw beginning and unfolding as in a vision. Therefore Ilúvatar gave to their vision Being, and set it amid the Void, and the Secret Fire was sent to burn at the heart of the World; and it was called Eä.
Then those of the Ainur who desired it arose and entered into the World at the beginning of Time; and it was their task to achieve it, and by their labours to fulfil the vision which they had seen. Long they laboured in the regions of Eä, which are vast beyond the thought of Elves and Men, until in the time appointed was made Arda, the Kingdom of Earth. Then they put on the raiment of Earth and descended into it, and dwelt therein.

Of the Valar
The Great among these spirits the Elves name the Valar, the Powers of Arda, and Men have often called them gods. The Lords of the Valar are seven; and the Valier, the Queens of the Valar, are seven also. These were their names in the Elvish tongue as it was spoken in Valinor, though they have other names in the speech of the Elves in Middle-earth, and their names among Men are manifold. The names of the Lords in due order are: Manwë, Ulmo, Aulë, Oromë, Mandos, Lórien, and Tulkas; and the names of the Queens are: Varda, Yavanna, Nienna, Estë, Vairë, Vána, and Nessa. Melkor is counted no longer among the Valar, and his name is not spoken upon Earth.

Of the Maiar
With the Valar came other spirits whose being also began before the World, of the same order as the Valar but of less degree. These are the Maiar, the people of the Valar, and their servants and helpers. Their number is not known to the Elves, and few have names in any of the tongues of the Children of Ilúvatar; for though it is otherwise in Aman, in Middle-earth the Maiar have seldom appeared in form visible to Elves and Men.