[@The 42nd Gecko]

Taura's abilities that Artoria would be able to copy are, a heavy weight super-strength/thoughness (she can't copy all of Taura's physical might though, because of reasons), her Celestial Spirits powers (which is where the Titan's Nova attack comes from, which is just a big dumb blast of holy magic) and her Earth Manipulation powers. That's pretty much what Taura is powerwise, just a big dumb space bull that can blast people with holy magic and throw several tons of dirty in your face.