(You are way behind if, at any point during this turn, an opponent had 10 or more life than you, controlled at least three more creatures than you, or had at least three more cards in hand than you.) To determine if you are way behind, check the game state as it was at any point during the current turn, regardless of whether Knight of Lost Causes was on the battlefield at that time
2017: Yet another old school MTG draft I just can't get enough of this stuff
If a cards ability affects cards in play, this only includes character and item cards currently on the table
Furthermore, Pidgeot ex has a free retreat cost, making it the optimal choice to put in the active spot after a Pokmon is knocked out
Another recently memorable example might be the various Cat Oven decks that utilized the looping of Cauldron Familiar and Witch's Oven