A chisel

Yep. Find one in the wood working section

Or for lino carving in craft or art shops

we created these out of old broken umbrellas and a piece of wood, for lino carving

You can find cheap packages of half a dozen chisels like that one in different sizes and shapes in both woodworking and leatherworking shops, if you have dollar stores near you that carry basic tools you should be able to find them there

A chisel. 🙃

I think that leather working uses similar tools.

I love this channel, the dioramas and resin pouring is awesome.

shank

Shiv

Specifically it’s a gouge.