Dantalian brew a potion that paralyzed people. It required water, a flower, a scorpion and an object that has touched the desired person's lips. Zile used it to paralyse Prue, and Dantalian used it to paralyse Zile.
Cloaking: Used by Dantalian to cloak her lair from forces of Good.
Transformation: Used by Warlock Piper to transform Craig into a pig and by Warlock Phoebe to transform Leo into a stick in the mud. Piper later reversed her and Phoebe's transformations on Craig and Leo.
Molecular Inhibition: Used by Warlock Piper to freeze Marie, Dantalian's hand, Leo and Zile.
Telekinesis: Used by Warlock Phoebe to open the Manor's front door and to fling Craig and Marie outside. She then closed the front door. Warlock Prue used it to fling her sisters.
Tactile Hypnosis: Used by Dantalian to make Zile and Prue do her bidding.
Conjuration: Used by Dantalian to conjure athames for Prue and Zile.
As warlocks, the sisters all had the ability to blink. This is the first time any of the sisters had the ability to teleport.
As a warlock, Prue's Telekinesis appeared to be stronger; she sent Piper and Phoebe flying by raising her hands rather than flicking them as she normally did. She also gained the power of Blinking.
This is the first of two episodes where all three sisters are evil, the other episode being 12 Angry Zen. It is the only episode where Prue is evil, and the third for both Piper and Phoebe.
Leo dies for the second time.
Unlike her other sisters, this is the only episode where Prue develops a teleportation power of some kind: blinking.
The Book of Shadows' pages were somewhat blackened when it turned evil, a sign of the strength of the evil magic flowing through the Charmed Ones.
Future Phoebe and Paige both arrive to this time from 2003 (Cat House) to when evil Piper and Phoebe respectively "froze" and shattered Leo.
This episode marks the return of Cole into Phoebe's life.
Phoebe's fears about her love for Cole pulling her toward evil proved deadly accurate, as just over a year later, she briefly became Queen of the Underworld after Cole was possessed by the Source.
This is the only episode where the evil of one sister is spread to the other two and the Book.
We find out that certain dignitaries, including demonic judges and dark priests, have the power to hide their activities.
Piper's attitude and ability to take charge of the Power of three (or in this case two), may have helped her change her attitude to allow her develop Molecular Combustion and foreshadowed her capability to take over as head witch. She'll also show these skills in Look Who's Barking.
After Dantalian was vanquished, Prue says "Well that was the wedding from hell", which was the name of an episode in season one.
The restaurant where Prue has lunch with Justin, is the same one featured in the episode Careful What You Witch For on Prue's date with Dick, and again in the episode Pre-Witched when the warlock kills the girl when the sisters refuse to kill him.
This episode scored 5.4 million viewers.
In the beginning of this episode, Phoebe is watching "Kill It Before It Dies", which was established as her favorite movie in the season 2 episode "Chick Flick". It was also mentioned by Cole in an earlier season 3 episode.
At several moments in this episode, you can see Phoebe's lipstick change, or at least be worn off and reapplied.
When Phoebe kicks Dantalian in the attic and she falls, Dantalian is first wearing a flat-heeled boot. A moment later she is wearing high-heeled boots.
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