■ Double breaker

■ When you put this creature or at the start of your turn , you may turn a card in your mana zone face down .

■ Your Unknown and Zenith cost 3 less to summon . They can't cost 0 or less.

■ Crystal Arms 4: If you have 4 or more face down cards in your mana zone , your creature 's can't leave except by losing a battle .