Leyline Binding and Teferi, Time Raveler are both strong when it comes to answering an elemental that was cheated into play, while Archon of Cruelty goes way over the top of what Scam is doing
In addition to serving as flexible removal and a massive body in combat, this creature immediately puts your opponents on a timer, as whenever Ulamog attacks, you exile the top twenty cards of the defending player's library
Several effects rely on your creatures dealing combat damage, but there's little evasion and not much in the way of combat tricks aside from borrowing potential blockers to attack with
Uncommon or Mythic, thats your odds
About Avatar: The Last Airbender
Well, drawing cards, I guess