Flashes of Darkonda Mighty Morphin Power Rangers : Season 6 Episode 16

Andros does some undercover work on an alien planet, where Darkonda is hanging out at a casino. Andros manages to beat a group of aliens in a game of cards, and win Zordon's key cards. Andros escapes the planet, and finally remembers that it was Darkonda who had kidnapped his long lost sister.