Band of the Raven King

This ancient ring belonged to a secluded old sage known as the Raven King, a powerful sorcerer. His presence heralded the coming of ravens and crows. He was able to see any and all through their eyes. He knew many things, from days past and even, some records say, into the future. He kept many safe from evil for all of his days. His greatest accomplishment having been defeating a Balor, a great demon from the depths of Hell. Though mortally wounded from the fight. He survived for a time. Before the demonic energy began to corrode him. Eventually choosing to perish beneath a great tree, the location of which is unknown, which is now a holy ground for ravens. The ring, when attuned, grants the wearer the following benefits:

• You gain the ability to summon Nevermore. The Raven King's lifelong familiar companion that can speak your native tongue, once every long rest. It lasts until death. It is a magical companion native to the shadowfell, and on death it travels to the plane of shadow to await your next summoning.
• You may see and hear through Nevermore's eyes and ears.
• As you use the ring, you will begin to emit an aura that attracts ravens and compels them to serve you.
• You gain the ability to impart basic ideas to ravens through verbal communication. They cannot speak to you, but they understand your words and may nod and so on.
• You can in a time of need, call upon the ravens to swarm your enemy. Call out the command word and choose one target. Target must make a dexterity saving throw, DC 10 + Proficiency Bonus. On a save, ravens impeed the targets movement, reducing movement speed by half and blocking opportunity attacks from the target. On a fail the ravens cause your enemy to be restrained until the end of your next turn. Once you use this ability you may not use it again until the next dawn.