The emerald villain can be useful in an 'actions matter' deck and could be a great compliment for Alice, but he also has some stiff competition in the Emerald five-cost slot thanks to Kuzco, Temperamental Emporer and Ray, Easygoing Firefly
Even though Queen Brahne is likely to die in combat, it should be able to trade off with something in the process and leave you up one Wizard token, which is a pretty good deal
So If I control Insidious Mist, it has no mana cost, but its converted mana cost is 4
Araya has captured that split second perfectly
These six cards are part of one of those cycles, what is known as enhanced cards
Needing to have one Hedron Alignment in your hand, one on the battlefield, and one in exile and your graveyard, this is an incredibly difficult win to assemble