Rex Infernus: How to Build the Warden’s Blight Wonder Weapon (BO7)

The Warden’s Blight is the last Wonder Weapon in Black Ops 7 Zombies, and it is the toughest to build. It is a set of dual crossbows assembled at Dravakar’s Anvil in Rex Infernus, and getting there means clearing a chain of grapple puzzles, a light-beam room, a life-draining vine, a forest scavenger hunt, and a rotating-pillar riddle. Here is the exact path from an empty grapple hand to a finished weapon.

Quick answer: Activate Pack-a-Punch to unlock the Void Claw grapple, surge the Nexus with a purple orb, break the Dravakar wall for the Fracture of Nyxara and slot it to make the Astral Flame, shoot the eye in Nyxara Sanctuary and route the beam into the Inner Sanctum, feed the vine and eat the fruit to reach the forest, collect three Wonder Weapon parts from three corpses, then solve the Dravakar Sanctuary pillar riddle and grapple up to Dravakar’s Anvil to build the Warden’s Blight.

What you need before you start

Nothing in this build works until Pack-a-Punch is running, because that quest hands you the Void Claw grapple hook, which every later step depends on. You grab the Void Claw from below the Nexus Forge once Pack-a-Punch is complete. Keep an explosive Lethal Equipment on hand to open a hidden wall, and Melee Macchiato helps if a stubborn plank refuses to break.

Requirement	Why it matters
Pack-a-Punch active	Unlocks the Void Claw grapple and the flame-charging mechanism
Void Claw grapple	Used for orbs, wall jumps, crystals, and the final ceiling climb
Explosive Lethal Equipment	Breaks the Northwest wall hiding the Fracture of Nyxara
Astral Flame	One-time item that lights the eye puzzle in Nyxara Sanctuary

Surge the Nexus and make the Astral Flame

With the Void Claw equipped, look up at the sky around the Nexus Forge and grapple onto a floating purple orb. Drag it into the center of the Pack-a-Punch so it starts orbiting, then interact with the Crank to surge the Nexus.

Go to the Dravakar Main Chamber and face Southwest toward the Dravakar Entrance. Grapple up into the roof, turn to the Northwest wall, and throw an explosive to break it open. Pick up the Fracture of Nyxara behind the wall.

Carry the Fracture of Nyxara to the Nyxara Main Chamber, jump up the North wall, and hold interact to slot the crystal into the empty socket. Return to the Nexus Forge and interact with the purple fire pit to collect the Astral Flame.

Note: The Astral Flame is single-use. If you waste it, you have to repeat the orb and crystal steps to charge another one.

Open the Nyxara Inner Sanctum with the beam puzzle

Head through Nyxara Sanctuary and face West toward the locked door in the distance. Shoot the Astral Flame at the eye, which fires a purple projectile into the crystals on the walls.

Use the Void Claw to pull the crystals so the beam bounces from one to the next. Keep adjusting until the projectile lands in the locked door in the South area of the Nyxara Main Chamber.

Enter the now-open door and interact with the purple orb inside. The floor collapses and drops you into the Nyxara Inner Sanctum.

Feed the vine and reach the forest

A vine sits in the center of the Inner Sanctum. Stand near it and let it drain your health until the vine’s life bar fills completely.

Once the vine is full, a fruit grows that you can interact with. Eat the fruit to teleport into a dark forest area where the Wonder Weapon parts are hidden.

Collect the three Warden’s Blight parts

Inside the forest, find and interact with three corpses to hear Warden dialogue. Each corpse gives you one piece of the weapon. If a timer runs out before you finish, you are teleported back out. Advance a round, return to the vine, and eat another fruit to head back in for whatever you missed.

Part	Where to find it
Corpse 1	Far left corner, near a cave
Corpse 2	Middle of the map, resting by a rock
Corpse 3	Inside a destroyed wooden cabin — melee the wooden plank to the left of it

Tip: If the cabin plank does not break with a normal melee hit, Melee Macchiato gives you the extra force to knock it loose.

Solve the Dravakar Sanctuary pillar puzzle

Enter the Dravakar Sanctuary and look at the Southwest wall for the blue writing. Interact with it to receive a quote from Dravakar, which is one of four possible sentences. The quote you get decides how you set the four pillar symbols — a Sun, Moon, Galaxy, and Runner.

You rotate the symbols using three dials placed around the room. The Northeast dial sits close to the Armor Wall-Buy, the East dial is opposite the blue writing, and the Southeast dial is left of the GobbleGum Machine. Match your quote to the inputs below.

Quote on the wall	Dial inputs
I remember the runner that travels to stars, while moons and galaxies stay true.	East dial x2, Southeast dial x3
I drift to the runner that travels to the Moon, who borrows from galaxies when stars stay true.	Northeast dial x3, East dial x2, Southeast dial x1
I drift to stars that remember moons, who borrow the runner that travels the galaxy.	Northeast dial x1, East dial x2, Southeast dial x2
I remember galaxies that drift to moons, who borrow the runner that travels the stars.	Northeast dial x2, Southeast dial x2

When your symbols are set, walk to the central pillar and interact with its dial to lock in the answer. A wrong submission locks the mechanism for a full round, so read the quote twice before you confirm.

Build the weapon and confirm it worked

A correct answer lowers the central pillar and opens the room above the sanctuary. Grapple up through the ceiling with the Void Claw and interact with Dravakar’s Anvil while carrying all three parts. That assembles the Warden’s Blight, a dual crossbow you can then run through Pack-a-Punch for an upgrade.

You know the build finished when the crossbows appear in your hands from the Anvil. Keep in mind this is only the Wonder Weapon craft. The Bloodthorn Wonder Weapon skin, a Calling Card, and 10,000 XP come from finishing the full Rex Infernus main quest, which still ends with the Warden fight against Jack McGregor.