|Effect(s)||Damage enhancement (temporary), Speed enhancement (temporary), Immunity to physical attacks (temporary)|
|Requirement||Being Agni, 1% of required vigor is deducted from the summoner's vigor|
|Blog source||Agni's skills|
It has effect on physical constraints such as gravity and mass. Although it increases speed to the point it looks like teleportation, it is not. (If there is a fire at the destination, Immortal Fire is much more efficient in regard to vigor consumption than Fire Assimilation.)
In the state of Fire Assimilation, the user is close to invincible. The only problem is that vigor continues to be consumed.