Efreeti and efreet sultans are level 6 creatures of Inferno. They are recruited from the Fire Lake. Note, that efreet is singular while plural phrasing is efreeti.
Efreet and efreet sultans are recruited into Inferno forces from the realm of fire magic, and are, consequently, immune to fire school spells. They are natural enemies of genies and master genies and do 150% damage against them.
Although efreeti are immune to fire magic, they are not unaffected by fire-based creature attacks. For example magogs fireball attack or dragons breath attacks are not considered to be magical and therefore they do harm efreeti.
Special ability
As a beings of realm of fire magic, both efreeti and efreet sultans are immune to all fire school spells. They also both hate genies as well as master genies. In addition, efreet sultans have natural fire shield, which reflects 20% (cp. basic level Fire Shield) of the damage taken back to the attacker in melee combat. The shield does not reduce the damage taken by efreet sultans. The amount of damage reflected back to the attacker is defined the moment attacker inflicts it. Even if the attack kills the efreet stack, the shield still causes damage to the attacker, but damage in excess of what was required to kill the stack is not counted when calculating the damage the fire shield does. Also, creatures with the ability to evade enemy retaliations (e.g. vampire lords) suffer from the fire shield. The only way for creatures to attack efreet sultans without being affected by the shield, is with ranged attacks.