For one black and one green mana, you can either throw things in your grave to fuel other cards or, produce either color mana for other ventures
Thats incredibly powerful, especially against Pokmon with high retreat costs
The obvious downside of this card is its toughness of one, but the speed and aggressiveness it gives can be a game-changer
To match the flavor, the win condition was tied to you having done a lot of things
I managed to score a Van Gogh Pikachu promo via Pokmon Center's disastrous launch and that basically showed how TPCi prefers to handle this kind of problem in all of it's ugliness: make empty promises and sweep the nastiness of the situation under the rug
Kastral, the Windcrested Kastral, the Windcrested is how WotC does straightforward commanders these days