Unlike other similar huge seven-casting cost flyers (Blizzard Elemental, anyone?), it gave you the mana on the turn you played it to save it
Gogo, Mysterious Mime* Gogo clone just wish you were more interesting than a middling clone that is undersized when not copying things on attack, even if you can copy legendary creatures 118
With Jace, the Perfected Mind leaving Standard I like that this wrath-esque card also kind of doubles as a way to potentially win the game down the line
Mana Dork / Combo Subtheme One standout in the Defender Tribal support pool is Axebane Guardian (and a lesser extent, Overgrown Battlements), since it can tap for a huge amount of mana of any color
Another thing that design occasionally does, that development seldom does, is just start with a certain card or cards in the opening hand