pokemon tcg pocket card rarity list of Two-Diamond Cards Pokemon TCG Pocket Card List:

The back face of each card is designed to be compatible with standard Magic sleeves, making them a great option for collectors and players alike

Its indeed one of the few illusions-matter cards alongside Lord of the Unreal

Although its unclear what exact function Roshan, Hidden Magister will have overall, it does seem to be particularly good in a disguise/morph build in an assassins deck so you can get assassin attacking triggers for those face-down creatures

A clear accelerator in pirates, its not quite accurate to think of Staunch Crewmate as half a Knight-Errant of Eos because its a lot weaker and its search is more limited, but this is a breakable level of effect