"These lesser Efreets do not grant any wishes, but you will wish them gone."
Lesser Efreeti are summoned in packs of three by Nazeru during the battle. They deal fairly high damage, but have very low health and can be killed fairly easily.
When Nazeru is low on health, he summons increasing numbers of Lesser Efreeti.
Nazeru can also turn Barrack soldiers into Lesser Efreeti, so troops should be moved away from the exit when he appears.