Like many of the characters, some are locked in, like Ifrit, who is gonna be red, that makes sense
Although Senu enters the battlefield attacking as a result of its last ability, it was never declared as an attacking creature
Instead, green doubles down on brute strength with the trample ability, which lets big creatures blast through the defenses of smaller blockers, and the fight mechanic, which forces weak enemy creatures to trade blows with yours even outside of normal combat
Diamond Valley is a little-mentioned member of the Reserved List, with just one printing back in 1993, and both its age and its obscurity make sales infrequent
A SOLUTION TO CONTROL DECKS Are you tired of all those Control decks pushing you around
They're still kicking about Standard as well (thanks to Foundations , which has a lot of staple goblins), and are likely to make a huge impact once Lorwyn drops