You can replace Elspeth, Storm Slayer with Chandra, Torch of Defiance
(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
While I find these legend rule cards to be tasty, though, they are starting to seem a bit decadent to me
Instead, Glaceon grows in stature thanks to the complementary nature of the colors used on this card
The new cards pair two Pokmon on the same card for increased power