They provide not only a tangible reward to the player running primarily Mountains but punish the numerous multi-color value piles that seem more and more prominent
: Until end of turn, this land becomes a 3/3 black Beholder creature with menace and "Whenever this creature attacks, exile target card from defending player's graveyard." It's still a land
The Walls of Ba Sing Se Speaking of high mana cost, colorless permanents that work well in a wide range of different decks, meet The Walls of Ba Sing Se, and yes they are tall, aren't they
BPhillipYork: This isn't really a new mechanic per se, we've seen it before with germs and other equipment that creates a creature
While it's tempting for this deck to go wide, and we will be, it's also well worth giving a Volo deck a light mutation subtheme
Not that i would add these in my cube, but i would rather see these in my deck / sideboard: Basilica Guards, Jeskai Barricade, Wall of Resurgence, Puncturing Light EDIT: Wall of Resurgence might actually be sweet enough that i could see it in my cube also