Zephyr Shield

Requires attunement. This shield has 5 charges and regains 1d4+1 charges at dawn.
If you are hit with a melee weapon attack while wielding this shield, you can expend 1 charge and use your reaction to blast the triggering creature with strong wind. The triggering creature must succeed on a Strength saving throw (DC 15) or be pushed 15 feet away from you.
In addition you can spend 3 charges to cast the spell wind wall (save DC 15).