In Birth By Sleep, at the end of each game on the Command Board Minigame, the abilities I've used gain experience. I've seen a number of places that say things to the effect of:
Playing your abilities on the board will earn you experience.
And even so far as:
You will draw cards not maxed out first. Always
If your opponent buys your space, that command will not gain experience.
But what actions will actually give me experience? Do I just need to play my card? Do I need to level it (the tile on the board, I mean)? Will I earn more experience if my opponents land on it? What actual event(s) trigger my gaining of experience and what factors dictate how much?