There are a lot of cards that should absolutely be in this kind of deck, one of which is Venerable Warsinger, a three-mana Red and White 3/3 with vigilance and trample
So if you're building a metal type deck and need some power, and the ability to attack twice per turn, possibly against two Pokemon, this is the card and line for you, I wouldn't hesitate to use a 2-2 line of Drilbur and Excadrill in a deck
It also hasnt made too much of a splash in other formats
"The card 'Splendid Genesis' and the card '1996 World Champion' are technically legal in DCI sanctioned play (as they are real Magic cards)
Includes a powerful Single Card: Nami ST21-009, a common, for strategic plays
However, in limited formats (Sealed Deck, Booster Draft and Rochester Draft to be specific), commons are a lot more relevant than uncommons, which in turn are more relevant than rares