O
orgg
Guest
...It seems they're in the Mirroden block in a more evolved form, but they don't come right out and say it.
http://www.wizards.com/default.asp?x=mtgcom/arcana/490
They're the core of the Archbound critters. Heh. How creative.
http://www.wizards.com/default.asp?x=mtgcom/arcana/490
They're the core of the Archbound critters. Heh. How creative.