Combined with cards from the last Block's Top Set such as Ancient Tomb or City of Traitors, you can see how powerful these are
The enchantment gives every nonland card in your graveyard the escape mechanic, meaning you can recast them by paying their normal mana cost plus exiling three other cards from your graveyard as an additional cost
Deathrite Shaman Deathrite Shaman does need to be in a format with fetch lands to shine, but the 1-mana planeswalker feels like a comfortable winner among elves
You don't usually see Vigilance or First Strike or Deathtouch or Lifelink on a Dragon
Sphinx of the Final Word If your game plan involves winning with instants and sorceries, Sphinx of the Final Word can make sure that happens
He's expensive for what he does, and the limitation of only being able to use the mana for artifacts makes little sense in a game where we have Sol Ring, Mana Crypt, Thran's Dynamo, Worn Powerstone, Sissay's Ring, or basically any other colourless mana rock