Flare Circle

Flare Circle (炎化爆獄陣) is an Art created from the combination of Ranged Barrier, Combustion, and Fire Manipulation.

Description
As Rimuru describes it, Flare Circle first encases the target in a circular Ranged Barrier, before using Combustion to heat up the space within the barrier, alongside Fire Manipulation to accelerate molecular motion in order to achieve high temperatures. As a result, any target enclosed in Flare Circle is scorched by several thousands degrees of heat. In addition, the attack is strengthened due to the flame being confined, as the oxygen of the air inside the barrier is consumed rapidly, asphyxiating breathing beings even if they survived the heat. However, evolved species that don't require breathing and possess Fire Resistance won't be gravely injured, as demonstrated by the Orc Disaster when Rimuru casted Flare Circle against him.