Issue is, all of these printings were US-only, with even the European release of Dawn of Destiny replacing Ra with a different promo card, Mesmeric Control
With Xyris leading the charge, every draw turns into overwhelming value, swarming your opponents with creatures while keeping your hand full of answers and threats
Use artifact synergies to bring your Vehicles to life, then put your pedal to the metal and run your opponents over with an onslaught of mechanized might
Sin, Spiras Punishment Sin, Spira's Punishment is a very powerful late game card that can randomly get back a permanent when it enters/attacks
That creature's controller gains life equal to its power
This makes him a terrifying threat in a tribe that naturally features plenty of Lifelink creatures