The Bad Honestly, not much
The Dark Ascension Player's Guide, which contains play tips, story background, and a complete visual spoiler of every card in the set
The one who starts playing doesn't draw a card from their common deck and can't attack
Much like Kamahl, Fist of Krosa this can be a card that proves more useful among the 99 rather than as a commander, but since it can be paired up with a background, it allows you some extra options when deciding which other color you want to play
While that day may eventually come, today players can download a brand-new ROM hack that combines the story, characters, and cards of the criminally underrated Yu-Gi-Oh: Forbidden Memories with Pokmon Emerald's gameplay and overall style