I have been using it in a slightly tweaked version of an older deck.
Today would have been rough for my skill level with out it.
One match, my opponent stuffed his deck with buffed asteroids and 3 additional copies of Meteor Shower. a couple went off before i could play one and the rest went bye-bye.
The next match had someone playing multiple copies of Dirdra and stuffing idk how many groups of 8 minions each into his deck. I do know it took a long time for the card removal animation to finish.
I have been having fun with it previously, for a ton of plague cards in mine, and grain minions in the other deck. locks symphony cards. marin cards. patches minions,and anything else that puts cards in either deck that are bad for me.
I don’t know anything about this new xpac except for the little i have seen today. i have enough gold to buy some decks and ash to make important ones if i don’t get any in the basic decks. I am waiting a bit for the early rounds of the rewards to see what cards are in there (maybe level 10-15?).
Worse case a 5/5 card isn’t horrible to play if you don’t have anything better at that time.