Tonight I went from low D3 to Masters quite easily with this deck. I had noticed how my slower 3f decks lost whenever I ran across a nightfall deck and I also read another redditor's deck that used Unraveling Fanatic. I can say, that card has been great in this deck, though I often (though not always, wait until I can hold up an unseal or disassociate at the same time. Same for Jennev merchant when I swap for maul. This deck has had some very satisfying wins and held up well even in the late game. This is definitely an aggro deck, so push for damage even when it seems like all hope is lost. In general, if you start beating them with even one solid attacker like Resolute Monk, holding open a counterspell often won the game for the me.
My last win to masters was especially satisfying with two 16 damage mauls in a row. Hope you have fun!