It won't be some miracle shield considering we have gods and demons among us, but it should hold up fairly well. I would expect it to withstand one powerful impact, or perhaps five lower level ones. I don't make items I would consider useless.

[So as long as Mordred doesn't use her Noble Phantasm, or a god their ultimate skill, it should be pretty sturdy at least once. This freebie is her way of saying "thank you," for helping Gray.

'Sick,' huh? Is that similar to 'cool'? Rin will happily take that as a compliment of her work, and for a moment she's just a bit warmer. A bit softer.]

Ideally you won't need it, but the trials that Oracles present don't allow for the ideal. The important thing is that they serve you well.