Part of the pattern of the major law of fire, with part of the pattern of the major law of darkness, and part of the pattern of the major law of wind, with several small parts of other minor laws to connect them all together
This is the hybrid pattern *total reflection pattern* that Robin came up with in his meditating days.
The main idea is that the pattern redirects the heat that falls on the walls of the stone furnace back inside of the furnace.
This way there will be no conflict with the heat generation pattern, each of them will work independently from the other,
and also there will be no heat lost unnecessarily by leaking through the walls which is also a major addition!
To put it in a simple way, this pattern will keep the walls of the furnace cool at the normal room temperature, While hell burns inside.
The basic idea seems feasible, but the implementation was never easy.