This Skill is similar to Fire Assimilation, but the user becomes a unparalleled strong white flame. It is different from the concept of white fire or white stars (but it's uncertain how).
This skill requires a lot of vigor, quickly shaving away on the lifespan of the God's summoner. That is why Agni only uses it if he is out of his mind.
In this state, Agni's belligerence is very high: he does not distinguish between friend or enemy anymore and annihilates them altogether. In the wars between suras and gods, this characteristic of Agni often was used in operations: He was dropped off between the sura like a bomb.