Scary new Ring of the God of Destruction

[Calamity Roar: Uses the dragon power within Ling Long's soul and burns her life to release a mighty roar capable of terrifying gods, demons, buddhas, and ghosts. When the ???? roars, all existences can only shudder. Effect: It causes irresistible damage and stun to all surrounding life forms from the source of her life, the damage and stun are proportional to the amount of HP burned multiplied by 10. The HP burned can be between 50-99.9%, but cannot exceed the amount of HP Ling Long currently has. The damage caused is equal to the user's HP multiplied by 10 and the stun time is equal to the percentage of HP used divided by 10. It has a range of 100 meters around the user, has no MP cost and has a cooldown time of 120 seconds. Ignores level and rank difference, cannot be evaded.]