Mono Shadow Gauntlet Grinder

This deck is really strong in gauntlets grinding for the following reasons:

1. It almost never get no powers on turn 3 or turn 4, which is very important in gauntlet. You have 25 powers in the main deck, 4 shadow etchings, 4 Vara's fevors, and 4 exploits. In addition, you have 1 power in the market, which can be exchanged by the 4 merchants. This means you would have 41 cards to attain powers.

2. The deck deals with aggro decks well. Your Vara's fevor, exploit, blightmoth, prism golem, Dizo, Vara, Eremot are counters to aggro decks.

3. The deck gains great card advantages in the mid game. Vara + Feartracker + Tasbu + Icaria + Dizo's office are good cards in the mid or late games. I choose Feartracker over Shadowlands Tyrant because it always deals damages and gain 3 lifes, and its synergies between Tasbu are very sweet.

update:
I removed 4 Icaria since she is too slow.
Added 4 Twisted Farmer to counter aggro, and his synergies between Tasbu is also very strong.