The owner then looks at the remaining cards and returns one to his deck. The remaining cards go to the predator. Since ownership has changed, these cards are marked, even if they will be traded back to their original owner immediately. Winning the League At the end of the League, the winner is the player with the most league cards. Because each card has a value in the league, it is not uncommon to see a common, useful card like a Bum's Rush traded for 2 uncommons or rares.
Good trading is almost as important as good playing.
Notes It is important to note how important trading is for playing in this league format. Few people will be able to get ahold of many cards for their strategy in just their sealed decks, but trading can alleviate that. If someone wants to make a new league deck, they turn in their current league cards as a prize for the winner. Another important thing to mention is that a league member need not play in league games if they don't want to. By intelligently choosing who you play and who you don't, your chances of winning increase.