
This isn't a tool you'd want to use on high- mystics - they have more efficient ways of getting solid hits in. However, this can shine in the hands of characters who want to occasionally help do some damage without committing a bunch of resources, and don't otherwise have the stats to back up a more normal attack.
The fact that it's a level 0 card means it can slot in a lot of characters with little effort, and it can quickly be dropped once you have a better tool for the job. I don't think this works well as a build-around, but it slots well for character who want access to a testless nudge of damage. Spectral Razor is a more flexible tool, but there are definitely characters with low-level mystic access who can make more reliable use of this.
For reference, as of writing, the list of characters who have access to Mystic 0 cards and have total Combat+Willpower of 5 or less (to compare with Spectral Razor include Carolyn Fern, Mystic Carson Sinclair, Mystic Charlie Kane, Daisy Walker, Mystic Mandy Thompson, and Rex Murphy. I don't think this would go in all of their decks, but I think the card is efficient enough to be worth considering in such a place.