Faerun - Northern Sword Coast - DnD

These dark leather boots appear to be of common make, but a subtle pattern of swirling storm clouds upon their soles hints at their magical properties. When activated as part of your movement, you gain a flying speed of 90 feet, opportunity attacks against you are made with disadvantage, and hostile creatures within 5 feet must succeed on a DC 15 Dexterity saving throw or take 3d8 lightning damage, with a limit of once per turn.