Random Number Perforator — Transmog Set Guide

Random Number Perforator is an epic one-handed dagger added to World of Warcraft with The War Within expansion in patch 11.1.0. It is a raid weapon from the gear set of the Liberation of Undermine raid, and its appearance is entirely styled after Gallywix's underground goblin casino.

The blade looks like a fragment of a slot machine: a brass body, rivets, garishly bright enamel, and the recognizable reel symbols of a one-armed bandit. The name itself plays on the term "random number generator" — the logic by which a casino pays out a win. The silhouette is short and broad, with a massive guard, so the dagger reads as a heavy mechanical tool rather than an elegant stiletto.

This is an agility weapon: its primary stats are agility, stamina, critical strike rating, and mastery rating. Daggers are wielded by rogues, druids, shamans, monks, and demon hunters, but visually the blade is most often assembled by rogues for dual daggers.

The Random Number Perforator is obtained from the boss One-Armed Bandit — the sixth of eight bosses in the Liberation of Undermine raid. The raid is located in Undermine, the goblin capital, and belongs to The War Within expansion.

Key details on obtaining it:

• The One-Armed Bandit is a giant animated slot machine built by Gallywix's engineers. The fight has two phases: in the first, the machine "spins the reels" and summons adds, and in the second a damage race begins.
• The dagger drops on all raid difficulties: Raid Finder, Normal, Heroic, and Mythic. The item level depends on the difficulty — the Raid Finder version is the lowest, and Mythic is the highest.
• The drop chance from the Mythic One-Armed Bandit is around 24%. This is a high value for a raid weapon: the dagger belongs to a small loot pool for the boss.
• The loot is bound to the character on pickup, but the appearance is permanently unlocked in the account-wide transmogrification collection.
• Attempts are not capped hard by appearance: the raid boss is available once a week on each difficulty per character, so when farming the appearance it pays to clear the boss with several characters.

If you need the appearance purely for the collection, the easiest route is through Raid Finder: the difficulty is available without assembling a group, and the dagger drops there just the same.

The Random Number Perforator has no separate color variants as standalone items — all difficulty levels use the same blade appearance, which is unlocked just once. This model has no separate recolors with different enamel coloring.

If you want a goblin dagger that's similar in spirit, look toward weapons from the same zone and from the reputation of the Undermine cartels:

• Weapons from the general Liberation of Undermine raid set — they share a single industrial-goblin style with brass and rivets.
• Daggers from the appearances sold by the raid's transmogrification vendor: access to them opens up through renown level with the Bilgewater Cartel patron program.
• Goblin blades from past expansions with a machinery and gears theme — close in silhouette, though poorer in detail.

• Harmonizes with plate and mail sets in a brass-and-gold palette — for example, with the goblin sets from the Liberation of Undermine raid.
• Looks great in "casino" outfits: the bright enamel and reel symbols support the theme of gambling and an underground gaming den.
• Suits engineering and mechanical character concepts — the blade reads as a machine part rather than a classic bladed weapon.
• Contrasts with strict, dark rogue sets: a debatable but eye-catching choice if you want a bright accent in a pair of daggers.
• Fitting for goblin and gnome characters whose image is built around technology, gold, and trade.