E pluribus unum
1.Game ends only happens if one of the player finish used up all 30 cards? but there might be some booster/support left but no more character...
Yes. Or when a player would attract a fourth dragon to their side.
2.my situation yesterday,i just retreat and now is my turn,my deck already empty,and just 3 cards left at my hand with 1 character...i can decline to start a fight and discard 3 cards on my hand to discard pile and end the game,am i right?