Beast King's Roar

You imbue your voice with the strength and ferocity of the mightiest of beasts, producing an ear-splitting roar. Each creature within a 60-foot cone must make a Wisdom saving throw or take 6d8 thunder damage, or half on a success. Any creature that fails this save by 5 or more is frightened of you for 1 minute. Affected creatures may repeat this saving throw at the end of each of their turns. Beasts of size Small or Tiny have disadvantage on this saving throw.

At Higher Levels: When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d8 for each spell slot above 5th. In addition, the size category of Beast afflicted with disadvantage on the save increases by one for each spell slot above 5th. A spell cast at 6th level affects Medium Beasts and smaller. A spell cast at 7th level affects Large Beasts and smaller. A spell cast at 8th level affects Huge Beasts and smaller. A spell cast at 9th level affects Gargantuan Beasts and smaller.