This is the only way to get a surge foil version of any of the Warhammer 40,000 cards, making them particularly valued among collectors
Ryu's Hadoken Hits Hard and Untaps Ryu Ryu, World Warrior is one of the few cards with an untap ability
Free sacrifice outlets are always strong, even type-specific ones, and Nemata lets you pull off dirty tricks like attacking with a board full of Saprolings, then sacrificing the ones that get blocked to pump up the ones that got through for extra damage
It was very easy to engineer a situation where you would wipe out all their threats and be able to keep some stuff of your own
One of the biggest examples of this happened to Unworthy Dead, which was a basic black monster that depicted a group of skeletons in its artwork
He is staring the whole of Amethyst down as anytime your opponent draws a card, you can also draw a card