Bombaclat

choose one creature within range and shout the word BOMBACLAATAT at them , instilling there very essence with explosive vulgarity. The target must make a constitution saving throw.  On a failed save they take 8d6 force damage. On a successful save they take only half damage . If target is  reduced to 0 hit point hey exploded and any creature within a 10 foot of the target when it explodes must make a dex saving throw. if they fail they take half of the targets original damage, on success they take no damage . saves are against the spellcasting DC