This set features a number of new mechanics and a major twist, in that the set no longer features the trademark silver borders of traditional Un-sets
"CMC=3 Power=3 -Color=Green" will return creatures that have a converted mana cost and power equal to three, but will exclude any green cards
5 Invasion of Regatha Invasion of Regatha has become a stand-out card in Standard's mono-red decks
If you put an Aura on an opponent's permanent, you still control the Aura, and mana symbols in its mana cost count towards your devotion
II Return all land cards from your graveyard to the battlefield tapped
What I came up with is that purple takes one spell effect from each of the other non-green colors: from white - enchantment removal (worse than white) from red - direct damage (worse than red) from blue - countermagic (exclusive) from black - edicting (exclusive) If purple had been around from the beginning, it would definitely have at least one exclusive ability, so blue doesn't get any countermagic at all in this set