This is the god that replaced Hazoret in the War of the Spark set. It has the same cost, but the effect and the power level have been creeped up.
You can run this one equally successfully in all types of red decks from aggro to control. It is also extremely hard to remove, unless you play cards that can discard it from opponent's hand or straight-up counterspell it.
That is why it would be smart to play it alongside Rhythm of the Wild, which deals with counterspells and gives it Haste.
So it looks like Gruul lists will benefit the most from Ilharg, the Raze-Boar.