"Give me the blessing of threads instead." Rio requested Skuld when she offered him her fate's blessing as her part of the deal. Deal
"That won't be helpful, you cannot control its power, or see the threads of others' fate. It'll be a waste." Skuld tried to inform him, as the blessing of threads was really wasted. No mortal could see the threads of fate, let alone control them. Even if she gave him that, it would be a 100% downplayed version of her skill, which would probably take years for him to master for any significant use. And once he learns that , he'll only complain about it later.
"Don't worry about me. Just do what you promised." Rio knew what her thoughts were, after all he had seen the story, and knew all about it.
