There are six Whetblades in total, all scattered about The Lands Between.
Loot the chest in the cellar to obtain the Whetstone Knife.
However, it’s possible for you to’t yet change a weapon’s Affinity with just the Whetstone Knife.
To do this, you need the other Whetblades as well.
Use a Stonesword Key on the imp seal statue beside it to unlock the fog.
Kill the two axe-wielding Exile Soldiers in the room.
Quality affinity weapons scale with both Strength and Dexterity.
From there, head out the north gate and go up the crumbled staircase on your left.
Below the next staircase and past the praying enemies is a doorway.
Head through it and kill the Glintstone Sorcerer in the room.
After that you could loot the Glintstone Whetblade from the corpse on the balcony.
If you’re able to’t fire up the door, the reason is that theRadahn Festivalis in progress.
That wraps up our guide on where to find all six Whetblades in Elden Ring.
