Ning read through the things quickly.
Unbreakable Undergarment was just that, an undergarment that was Unbreakable, or in other words, indestructible. However, even if the garment itself could not be destroyed, it did not do whatsoever to protect what was under it. So the only thing it was good at was not ending up naked after a dangerous battle.
Scroll of Fireball created a football-sized fireball that could be targeted at anything upto 20 meters away. Purchasing that gave Ning 3 scrolls he could use whenever he wanted.
Scroll of Minor Teleportation allowed anything within 2 meters of the user to be teleported upto 50 meters in any direction as per the user's choice.
The Minor Scrolls, from what Ning read, permanently improved the attribute of the host.
Strength made them stronger and more durable, agility made them faster and improved their flexibility, and Constitution improved their physical immunity against sickness and diseases.