I escaped Magics clutches a long time ago but I can feel myself being drawn in again
Im not sure if any Blue decks are doing that at the moment, but if Wizards creature a Blue bomb with an enter the battlefield text you can bet this card will be in the card list
Would you mind posting a picture as an attachment
600-1600s Its unclear when and where playing cards were invented, but they were popularized in China more than a thousand years ago
In terms of other colourless cards, I like Duplicant as a potentially free removal spell, Wurmcoil Engine for the value, Myr Battlesphere for early damage output and Steel Hellkite as a flying threat that can wipe out huge chunks of the board
(Well, at least when it comes to the "rules" in this article about building a mana curve.) A common example is when you draft a highly aggressive deck