São José do Rio Preto
Well, Brad did elaborate a bit more on a thread a while ago. so, quoting him.
Strikers is a true expansion (not a standalone) that greatly expands on the possibilities for Tag Team duels. The expansion gives you 'Strikers'--characters that can appear for one round and perform a special attack. You can have Cherri jump in and force a clash for you, or get Cadenza to stand in front of you for one attack. It's still in playtesting right now, but I hope to have it out later this year.