Yrthak (5e Creature)
From D&D Wiki
Huge monstrosity, neutral
Sonic Lance. Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 13 (2d8 + 4) piercing damage.
Sonic Blast (Recharge 5-6). Ranged Weapon Attack: +4 to hit, range 60/120 ft., one target. Hit: 18 (3d10 + 2) thunder damage.
Yrthaks are a rather curious creature. Nobody knows how such a thing came into existence. They are green in color, with large wings and a horn on its head known as a sonic lance. What it doesn't have on its head are eyes. In the yrthak's mouth, it's tongue has a special sensory organ that allows the creature to see. Its sonic lance has the ability to shoot sonic blasts at its enemies.