rare tag team pokemon card Reshiram & Charizard GX - 217/214 - Rainbow - SM10 Rainbow Rare Tag Team Cards

Considering that black is the colour of sacrificing your own creatures for big effects, this can easily turn into a major card draw engine

Also, Countryside Crusher loves this card

In this tournament, if it is not true friendship and unity depends on their compatibility with your partner and your spirit of Mourning

If you're looking to have a theme, you can also go based on the pinks and purples that swirl around Pokemon 282

In fact, its in the Valley

Luckily, many of your effects activate from the hand, namely the Resonators that special summon themselves which are much harder, if not impossible to negate in some circumstances