- Brainwashed and Crazy: Valtor manages to brainwash the students of Cloudtower.
- Heroic Sacrifice: Musa refuses to leave Galatea behind in the burning library despite the risk to herself, which is enough for Musa to earn her Enchantix.
- Wounded Gazelle Gambit: Valtor disguises himself as a stag, and makes it look like he's being chased by wolves in order to trick the Cloudtower witches into letting him in so he can brainwash them.
Recap / Winx Club S 3 E 10 Alfea Under Siege
Also known as Attack Of The Zombie Witches in the 4Kids dub and Taking Over Cloudtower in the Nickelodeon dub.