The Queen's Domain Pandora Blade is a traversal weapon, not a damage weapon. It hides behind a hidden wall in the same tomb hall as the Endu Shrine Gate Key, before the first boss, and the thing that makes it worth the detour is a lunge that turns into a huge forward leap. Find it, learn the timing, and it opens ledges you would otherwise spend Wind Gems on.
Where the blade is hidden
The Pandora Blade is in the tomb hall where you pick up the Endu Shrine Gate Key, before the first boss. Look for a wall with a broken brazier standing in front of it and open the hidden wall — the blade is inside, surrounded by posed skeletons. Two further secret walls in that area, one of them holding a lump of meat, also conceal it.
Because hidden walls have no outline, the crosshair lighting up is the only reliable way to confirm the wall before you commit. The full early list of secret walls is in the secrets guide.
Once you have it, the numbers are modest: Power 5 damage and Average speed. It uses the Lunging Stab moveset, shared with the Rusted Short Sword.
Queen's Domain Pandora Blade: the dash jump that makes it worth the trip
This is the one weapon in the game that keeps the demo's dash-jump, and it is the reason players max it out.
- Lunge with the right mouse button.
- Jump at the exact moment the blade starts to pull back.
- The lunge converts into a huge forward leap.
Spamming the dash attack while you are falling gives the same effect. The timing that matters is roughly 280 milliseconds between the lunge and the jump — that gap is what makes the jump clear almost any ledge. Combined with the Holy Sword's own dashes it reaches places that would otherwise demand extra Wind Gems, and it also gives good air control once you are in the air.
The rest of the movement toolkit — the Endu dash, the Cestus uppercut and the sprint jump chain — is in the movement tech guide.
What it does not do
Be clear-eyed about the trade-off. The Pandora Blade never evolves, its damage stays behind the endgame weapons, and it caps at level 100 — at which point it carries a +300% damage bonus and becomes roughly a 20-attack weapon. That is competitive for a normal swing, but it still loses to a fully charged Holy Sword swing.
So the blade is not a replacement for your damage weapon. It is a key that opens geometry. The list of weapons that do the actual damage at the end is in the endgame weapons guide.