Saw the news and I saw a hero we didn’t know we deserved step up to something and it inspired me.

Spear of the Defender

Weapon (spear), very rare (requires attunement)

This simple spear can be made from any long pointed object. The object is treated as a +1 magic spear, but the wielder can declare a target in 30 feet as his enemy as a bonus action. The target is allowed a DC 20 Wisdom save to not be affected. On a failure, for one minute the target must only attack the wielder of the spear. The affected creature can use spells and area effect abilities, but the wielder of the weapon must be in the area or spell. The wielder of this spear gains resistance to all damage from the affected creature and gains advantage on all Constitution based saves from effects caused by the affected creature. The wielder of this weapon can only affect one creature in this way at a time and the ability is reusable after a short rest.

Thoughts?