Wrath of Trog
|A bloodstained axe that was the favourite weapon of the old god Trog, before it was lost. It induces a bloodthirsty berserker rage in warriors who use it in battle.|
There's really not much reason to use the Wrath of Trog as your primary weapon. Berserkers can just wait for Trog to gift them a decent antimagic weapon that doesn't come with berserkitis, and other melee specialists may wish to use a weapon with a more universally useful brand and not have to worry about going berserk every fight, whether it's a good idea or not. It's possible to nerf the berserkitis with an source of clarity or by worshipping Ashenzari (or by being undead, but none of the undead races are particularly good with axes), but that restricts an equipment slot or god choice in exchange for a weapon that's honestly not that great.
The berserkitis' activation rate is high enough that it's actually the weapon's best selling point at the same time, at least in the role of secondary weapon. If you have the skill to use it at mindelay, a berserk character wielding it can very quickly take down powerful foes, and the antimagic brand will negate any casting threat your target might have posed. If you're intent on conserving consumables, the Wrath of Trog can function as a makeshift combat buff on demand. Just avoid using it in situations where berserking would be a terrible idea.
This is one of the oldest artefacts in the game, which perhaps explains its continued existence. In fact, it predates Trog himself, existing before gods were implemented, and it is very likely the inspiration for the god. Of the five original artefacts (Wrath of Trog, Scythe of Curses, Glaive of Prune, Singing Sword, and Mace of Variability), this one has probably changed the least.
True to the weapon's description, Trog will never gift it, since he can't seem to find it.
Prior to 0.15, it was a +3, +11 battleaxe.