Round 1 Summary
Zenithral's barrage of arrows slams into the creature one after the other, the final missile exploding in a flash of light that paints both Kayleesa and Erestor's faces blue.
Neither face seems to care.
Fergy's bolt of fire burns through the air and catches the creature's shoulder.
It doesn't seem to care.
Ug and Alalla crash into it, delivering blows that should shatter bones and cleave limbs. Somehow, this thing's hide withstands the punishment. Again and again they bring their enchanted weapons to bear. It struggles forward against the onslaught, hooked hands reaching forward....
Erestor's head snaps up, suddenly alert. Both mouths open as a scream of rage begins to build in their throats.
As the piercing whine gets louder, Erevain drops his sword and throws up his hands, trying desperately to conjure a wall of wind in the room.
The scream builds to a ferocious crescendo that batters the companions, flaying at body and mind. Both of the creature's heads stare with wide, hateful eyes.
Erevain claps his hands together, and the air around the heroes blurs as it swirls violently, instantly filling the space with howling wind, just as Ug slams his maul into the creature in a vicious uppercut, sending it sprawling onto its back and cutting off the scream.
Everyone make a DC 17 Constitution save (with advantage) or drop to 0 hp. If you save, you take 22 psychic damage instead.
As the companions stagger to recover from the terrible sound, to their horror the creature rises once more, its anger unabated. One bone hook slides through Alalla's armor like butter, and the other slams into Ug's gut (Al takes 43 damage, and after resistance Ug takes 82. Slashing and psychic). Working together, Alalla and Ug manage to throw the thing back, and it falls once more.
Spitting with rage, it starts to get back to its feet.
Rolls
Angry vs Al (adv) - (1d20+8, 1d20+8)
1d20+8 : (12) + 8 = 20
1d20+8 : (11) + 8 = 19
Angry vs ug (adv) - (1d20+8, 1d20+8)
1d20+8 : (20) + 8 = 28
1d20+8 : (18) + 8 = 26
Dmg to Al (slashing, psychic) - (2d12+5, 3d12)
2d12+5 : (81) + 5 = 14
3d12 : (1289) = 29
Dmg to Ug (slashing, psychic) - (2d12+29, 3d12+36)
2d12+29 : (78) + 29 = 44
3d12+36 : (8115) + 36 = 60
Psychic scream damage - (5d6)
(55444) = 22