Machuchi

My friend Allen and I are inventing a card game called "Machuchi". It's a little hard to explain, so I'll just say the what the rules are right now.

Starting:

Both players have a deck of 15 cards. Both players shuffle their deck and place
it face down. (See diagram) Both players draw 5 cards from the pile. The younger player goes first. At the beginning of your turn you may put as many cards as you want and can fit in your evolution pile. At the end of your turn you have to put a card face-down in the attack pile. This action ends your turn. (See Battle)

Battle:

(Battle not finished yet)

(Diagram not finished yet)