Yes, TRANSFORMED is a Scrabble word!

Letter values in Scrabble US: T 1, R 1, A 1, N 1, S 1, F 4, O 1, R 1, M 3, E 1, D 2.

Is it a valid word?

TRANSFORMED is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

subject to a mathematical transformation
change or alter in form, appearance, or nature
change in outward structure or looks
change from one form or medium into another
convert (one form of energy) to another
change (a bacterial cell) into a genetically distinct cell by the introduction of DNA from another cell of the same or closely related species
increase or decrease (an alternating current or voltage)

Also: transubstantiate.