This has been by far the most consistent Gauntlet deck for quite some time for me.
For the most part this deck is quite straightforward and close to it's ranked counterpart.
The card that deserve special mention are Spiteful Strike
and Firemane Cub
The first is often Torch on steroids against the AI, because it never expects combat tricks and it will often make you win the race. Firemane Cub
is actually a special tech against the charge and double damage bosses. If you play Gauntlet in Master enough you will notice that one of those two bossed will appear at least 50% of the time. It can often 2 for 1 their 1 drops and buy you enough time for victory.