I think it could do with a cost of 3 or 4 instead of 5 since its standard damage is reasonable.
The reduction to crumble damage should keep it fairly well balanced now I think.
I'll start working on artwork now. It will be interesting to try and give a good visual for the "crumble" part.
Would you prefer something that looks like its getting rusted and pitted, or something that looks like its made of old stone that is wearing away?
Yeah, I really didn't think about the original cost being better with the reduced damage. I guess I was probably thinking of "either or" but accidentally did both.
About the art, I was actually thinking of old stone. I think it represents the Crumble mechanic much better than a old rusty sword. Will ammend the card once again, and thank you for the opinions everyone.