Kangaskhan ex 190/165 Loading
Ekans from the original series fossil set
Mantle is a popular choice in decks where a Commander needs to get through and deal damage to a player, but its not expensive
Its hard to be too critical of Yennett, Cryptic Sovereign
Of course, theres also the fact that The Loyal Three (and their leader, Pecharunt ex) are all great cards in general, which does help
(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