Since it produces mana when you transform it, you can cast a 4-mana spell on turn 3
If you want a big boom to build up over time, Id recommend Time Bomb, Torch Song, or Shrine of Burning Rage
The Tales from Middle-earth Bundle sold well, and charted higher at #5, but selling older, already successful Magic product is not what WotC needs to gain momentum right now (see "Another 1,100 Employees")
Getting a clue is a bit worse than drawing a card straight up, even in a format with clue payoffs, but this still looks like a nice card, especially in decks that have cheap evasive creatures
The black-red one, Sword of Sinew and Steel , is worth $60
In most cases that player will want to prevent damage, then double what's left