Three mana to exile any permanent is an acceptable rate for most Commander games
Its a creature so powerful that it can deal damage to your opponent even before hitting play, all the while messing with their mind by saying the most ominous thing imaginable in every goddamn turn
And at a cost of three ink, she also fits nicely into Steelsong decks to sing some of the best songs in the whole game
Villain variants have a long track record of pulling outsized collector interest, and a fresh, unsettling alternate art on one of Disneys most iconic antagonists is exactly the kind of card that finds buyers well beyond the competitive crowd
Thor, God of Thunder is basically a finisher, dealing damage equal to the mana value of the equipment we cast while it's on the battlefield, and it also gets even better once we find Mjolnir, Hammer of Thor to double the damage
Constructing a Cube Cubes are typically around 360 cards on the low end, or 720 cards on the high end