It means Rydia would only have 10 total chances with her second ability to close out a win, and not all of those are game-winning targets
You can only do it on your own turn, so you cant tap it pre-combat, untap all your Myr, and then keep them up untapped to block and then activate Urtet on defense
Cards line up visually when fanned out, which sounds trivial until you have seen a deck where every proxy looks like it was cut during an earthquake
The Amethyst/Steel Starter Deck for Archazia's Island features Jafar and his hordes of Illusions, as they cause chaos across the island
Does this mean we should expect to see an officially sanctioned version of Sharpie Cube at some point in the future
None are more sought after than Ulamog, the Defiler, though