Black Clover has a good premise and potential, but it falls short of both of those. I was a fairly big fan of this show during the Elf Reincarnation Arc, but I haven't honestly enjoyed it since. No character dies, they're always magically brought back to life either via Mimosa or just because the author wants to keep them. The chapters are short, every twist is obvious or confusing, and Asta defeats strong enemies at a fast rate with little power.
It's not a terrible manga, but roughly created and overly predictable. Unless you're a huge fan of shounen I don't recommend starting it.
Story- 6/10
Art 7/10
Characters 6/10
Enjoyment 5/10
Overall 6/10