Ifrit

Tactics
Ifrit only spawns in Ancient Valley - Frozen Tundra. While this boss on its own is quite easy, beware of being trapped between the pillars he summons when there are multiple enemies, as you cannot use movement abilities such as the Huntress's Blink to pass through them. Try to stay away from him during the teleporter spawning period, so as to not spawn enemies near him that he can trap you in with. His only attacks are a short range flame attack and a melee attack apart from his pillars, both of which are easy to dodge. He is also slow; making kiting him very easy for a character such as Huntress or Acrid.

On death Ifrit may drop the item Ifrit's Horn.

Trivia
Ifrit
 * Ifrit, also spelled as "efreet"(among others) are supernatural creatures from middle-eastern folklore. The Ottoman Turkish sources usually associate them with fiery appearance.
 * It is speculated that Ifrit may have been designed by a kickstarter backer via backer rewards.