Boots Of Grace and Glass

You summon a pair of glass foot wear on a creature you touch (which appear in a form of your choice), when the creature makes an unarmed attack with its legs it can deal an additional 1d6 (+ your spell casting bonus) bludgeoning damage and the creatures movement speed increases by 10 feet

At Higher Levels: When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d6 and the creatures speed is increased by an additional 10 feet for each spell slot above 2nd