mtg cards with white border Colossal Dreadmaw [#0067 White-Border] (MB2-C) that player discards his or her hand. Cathars' Crusade - White Border

10 Alhammarret's Archive Alhammarret's Archive is a five Mana Colorless Artifact, allowing it to be used in any Commander deck regardless of identity

As a Dragon, you can spend two mana to shoot a creature

In Limited, where winning is mostly dependent on combat, this wont be too difficult

If Vial Smasher the Fierce or Tymna the Weaver are good enough to be your commander, surely you'd want two copies, right

The difference is that while they have an ink cost on them, there is also an extra block of text in the description area of the card which details that you can exert a character (turning them sideways and opening them to attack) of a minimum cost in order to play the song card for free