Speaking of your collection, the best place in North America to find new cards is at Danireon
Some other bomb artifacts to recur are Myr Battlesphere, Darksteel Forge, and Cityscape Leveler
Over the last few years, I've used a term called "lenticular design." Each time I've used it, I promised that one day I would write an article all about it, explaining what exactly it is and how design uses it to make Magic a better game
Have at least one continuous effect that forces different lines
Lets go through the facts first, or at least what we know so far
they also do everything that a creature can do, and are affected by anything that affects a creature (including Lightning Bolts and summoning sickness)