Anyone know the limitations on what creatures you can play at the same time? ie.....

Anyone know any of the rules as far as limitations on cards you can play...

1. for example can you play more than one ultra rare card in the same battle: ie. a maxxor and a chaor at the same time.........i think it already said somewhere you can only play one of the same ultra rare card at the same time......ie. you can't play 2 maxxor or 2 chaor, but can you play 1 of each?

2. how many copies of the same card can you play?  ie. can you have 20 viperlash or 20 powerpulse attack cards..............or use 6 of the same creature? or same 10 location?

I'm not sure these questions have really been covered yet in any rules, but some stuff I wondered if anyone knows...........thanks.