I run a Sabbath deck that has only one silver unit (the dog/cat, can't remember its name) and then no other single unit in the deck, all buffs for Sabbath and a couple create cards. This deck is auto win against every single deck except for two scenarios (they draw mandrake at the beginning so they can use it, or I get a really bad draw into my deck or the dog/cat card throws Sabbath to the grave, etc.) otherwise I always win. Even those that can double lightning bolt me, a heal takes it right back up to max and then adds some. Scorch, I just renew it, etc. I use it to get my daily rewards in 3 games and then I go to arena.
Plus it runs the gold that boosts a card in your hand and since Sabbath is the only card it always boosts him to 10 to start.
Some of the best times is when someone runs slave driver and they play it and nothing happens (because I have no units). You see them immediately hover over the card to see what happened. Plus I had someone give himself and me a viper, thinking it was dead in my deck, only that I run more alchemy cards then he did so my viper was insanely powerful.
So many people try to run like Ciri/Shupe, etc. to get themselves a huge card value you can't duel but with parasite you always win those battles too.
Love the deck. I think the card is insanely powerful but can be countered with mandrake (if you can draw it immediately) or double scorch if I can't protect it (which I usually can because I have the card that creates a monster card and one is always consume a silver from your graveyard which means you consume the dog and get a huge card value on the board, a few extra ale's to keep it up there too and you have a scorch buffer.
I lost once when they played Shupe and charmed a random enemy which charmed Sabbath but with my create mechanics usually doesn't happen as I put other stuff on the board.
Fun deck with a high win rate.