should add:
Never join a game against a Rook if you don't have Rook on your team.
Never join a game against a Sedna if you don't have Sedna on your team.
Never join a game against Rook / Sedna combo if you don't have Rook / Sedna combo on your team.
Never join a game against an Oak if you don't have Oak on your team.
Never join a game against a Demon Assassin if you don't have Demon Assassin on your team.
Never join a game against Oak / DA combo if you don't have Oak / DA combo on your team.
Erabus is just another demigod and you can win without having one on your team.
Might as well just play mirror matches... but which side gets to choose the demigods!