Corrected entry: Piper and Leo both make comments about Leo's inability to self-heal now that he's a mortal. But in previous episodes, it's mentioned that Leo wasn't allowed to use his powers to heal himself.
Cubs Fan
17th Jun 2010
Charmed (1998)
14th Feb 2010
Charmed (1998)
From Fear to Eternity - S1-E13
Corrected entry: It is established that Barbas can only appear every 1300 years for 24 hours, but because he became such a popular character, he reappeared in five subsequent episodes, the majority of which took place within a year of each other.
Correction: In the first episode with Barbas he was freed from the curse that only allowed him to appear every 1300 years, which is why he was able to show up frequently afterwards.
Correction: Leo was a white-lighter before and he wasn't able to heal himself when he was hit by a dark-lighter's arrow. However, injuries such as stab wounds would heal as seen in "Saving Private Leo."