From The Heroes of Might and Magic III wiki

Town: Inferno

[[Image: ]]	Attack Skill	16	Damage	16-24
	Defense Skill	14	Health	90
	Speed	13	Shots	0
	Growth	2	Cost	1100 gold
Special: Fire Shield + Immune to Fire Magic + Hates Genies

[edit] Description

Efreet Sultans are recruited into Inferno force from the realm of Fire Magic, and are, consequently, immune to fire school spells. They are natural enemies of genies.

[edit] Dwelling

Efreet Sultans are recruited in Upg. Fire Lake.

[edit] Upgrading

This is the upgraded version of the Efreet.