Mulligans
General Mulligans
Keep your cheap minions in every matchup (aside from Attorney-at-Maw, which you should only keep against Paladin). Keep Seedsman and Flowerchild against Druid, where your only priority is playing Jailer before your opponent (ideally with a Mosher in hand).
This version of Jailer Druid only runs four cards over 5 mana, allowing you to very consistently draw the Anub’rekhan Jailer combo. ETC comes loaded with an extra Underking or Mish-Mash Mosher if you need the extra value in control matchups, or you need to play the first Mosher in desperation against aggro. (I’m still working out the third card for ETC’s band; currently I run Innervate, but I would probably run Zok if I had him.) The rest of the deck keeps a very low curve, allowing you to fight for tempo until you can combo.
In control matchups like Blood DK and Control Priest, aggressively draw through your deck to find Tony, and save armor to play Anub’rekhan, Tony, Jailer in one turn, destroying your opponent’s deck. (Try to keep your hand full until you combo to dodge Theotar and Dirty Rat.) In every other matchup, Tony is irrelevant and can be played for tempo if necessary.
I started late this season but I’m currently Legend #3119 with this list and steadily climbing.