While one is on the battlefield, use the characteristics of whichever face is up with one exception: if the back face is up, you still use the front face's mana cost to determine the back face's mana value
However, theres an awful lot of creature cards in March of the Machine (and other sets, of course) which have two sides, as well as the aforementioned Battle cards
In a few months, you'll start the cycle again
Card Set(s) -ROMANCE DAWN- [OP01] CARD VIEW OP01-061 | L | LEADER Kaido Attribute Strike Block icon 1 Type The Four Emperors/Animal Kingdom Pirates Effect [DON
It started in Japan in 1996 as a pair of video games for the Game Boy, developed by Game Freak and published by Nintendo
The default mode is always Counter + the best of the other effects for the board state