May I use these assets commercially, even if I can't provide a link to the license? I can "give appropriate credit" and "indicate if changes were made", but the format I publish may be unable to have a functioning "link to the license" (quotes from the CC BY 4.0 page). Thank you!
Are you interested in a commission to expand this pack? Single-frame attacks for some of these would be perfect for my needs, and I'm not looking to purchase exclusive rights. I can email with details if you'd like. Thanks for your time!
