I doubt that the card is playable at all. The thing is compared to Gascon you won't always get the value it rolls, but you first have to select a target. For example if you aim it at a 7 points card, you get an average value of 4,9 points out of it. This means your enemy first has to have an 8 points card or you will loose value on average. And furthermore damage special cards are normally played to disrupt the enemy, which won't either happen with this card in most cases, or you will loose quite a lot of value.
In the end this card will stay a meme as much as Gascon and Blaviken Musicians, which is a bit sad, but doesn't hurt the game much.
I do not believe that is the point, sadly.
Pretend you go to a bookstore and pick up the first book in a trilogy. Let's say you read the book every day for an hour a night. You find it's quite enjoyable. Suppose you finish the book and decide to pick up the second book of the trilogy. You go through an identical routine, an hour a night. Suppose you find the second book is quite terrible. Since you enjoyed the first book so much you decide to press through. You move on to the third book and find, much like the second, it's quite terrible. You decide to express your displeasure to the author via a clear, polite critique. The author decides to write another trilogy, completely different from the first. They respond back and claim it's going to be really good and they learned from their mistakes, in part due to your critique, and you should consider buying it when it's finished.
Months go by.... The author claims the next trilogy is complete. You can barely contain your excitement. You rush to the bookstore to pick it up. You get to the bookstore, ask for the second set of books. Whoever works at the bookstore goes to pick out the books for you. As they return you notice something in their hands. Surely it's the next trilogy. Oh boy. They hand you the books and you return home. The day goes by and it's now your routine reading time. You pull out the first book and inspect the cover. You notice the cover is remarkable. Then you open it. Unfortunately, it's not what you expected. It's random gibberish scribbled all over each and every page. Words in random places, weird shapes everywhere. There is no rhyme or reason to the madness. Upon inspecting the second and third books it's more of the same.
Let me ask you this..... Would you read through the gibberish within the second set of books to express "loyalty" to the author? Would you have the same excitement for their future works? Would you even consider reading anything else from that author? I'm going to guess the answer is no across the board.
The point is CDPR made a spectacle out of HC when the game was still in OB. They made a lot of promises. Then they release cards like.... this... It turns out all of those promises, beyond the graphical/UI related "improvements", were complete horseshit. That is why people are irritated, annoyed, upset and frustrated.
It would be one thing to fail at delivering a promise while making an effort to do so. In that case they tried and just dropped the ball. Damaging an enemy by a random amount between 1 and 10 isn't that, at all. It's crystal clear such a card is the polar opposite of what was said. There is zero chance it exists due to making an effort and dropping the ball. This means it was created intentionally. Let that soak in for a minute.