You will need to install a user script manager extension to install this script.
Replaces hidden spoilers on 4chan with witch runes, switching back to the default font when moused over.
You need the MadokaRunes font: https://www.dropbox.com/s/n6ys414nviitr9y/MadokaRunes-2.0.ttf
Current version keeps the black background and white text so spoilers stand out more - if you want them to look the same as all other text but with the different font, use version 1.2. Or just edit the added css to make them look however you want.