Tempest's Wing Amulet

This amulet is shaped like a wing, crafted from obsidian and inlaid with shimmering silver that reflects the colors of a storm. While wearing this amulet, you gain a +1 bonus to AC. Additionally, once per long rest, you can use an action to channel the power of storms, casting Thunderwave at 2nd level. When you do, you may also deal an additional 1d6 lightning damage to any creatures that fail their saving throw against the spell. The amulet has a faint crackling sound when worn, reminiscent of distant thunder.