The white and black inversion is good guys vs bad, in general, and follows the manga of which gym leaders are with team rocket or not
Head judges decision is final Alright so your alter meets all the criteria to be legal, but its always up to the Head Judge to recognize it as so
You can detach up to 2 materials from this card
At its worst, you can use Nykthos to tap to for one colorless mana
Really, the best way to finish the collection is to keep track of the cards you dont own yet, and go back to duel against those deck recipes in the Campaigns (each recipe indicates the name of the level it appears in)
It changes things up much more than the previous Dark Pharaoh expansion, and is thus well recommended for anyone getting a lot of use out of the original game.