Its entire value proposition depends on someone else wanting it more than you do, at a higher price
Level X Rayquaza has a handy move called Dragon Spirit, which lets you attach any energy card from the discard pile to Rayquaza when active and attacked
Young Pyromancer isnt a goblin himself, nor does he make goblin tokens, but his affinity for fire will earn him an honorary spot among the ranks
As youd expect given their name, commons are, well common
It gets me huge mana once I pay 5 to get it out and let it sit around for a wrath
Cards like Secure the Wastes, Raise the Alarm, and Martial Coup make a ton of creature tokens to tap to Raff ability while triggering it themselves once you have some creatures in play