It includes three theme decks- Sky Guardian, Fury From the Deep, and Aqua Glider
Universes Beyond Secret Lairs come in one of two flavours
As it is, being both amber and amethyst severely limits the decks you can run it in, and completely shuts it out of more popular steelsong builds
But doing both and giving this blue creature flash is just distasteful, to the point where I question why people would even want to play this in a Cube environment
Here, you want weak creatures with good ETB effects like your typical Burglar Rats and Virus Beetles
You can only do this once, so if you lose, you can only get the promotional card from the Challenge Cup After you have defeated your third club, then the Challenge Cup will open