So I was watching Cardcaptors, and I suddenly realized how close the show reminds me of Pokemon.
-Main character starts off age 10.(Though Sakura does actually age. She's 12 in the end)
-There's a rival.(The guy in green in the background of the pic)
-Using creatures to capture other creatures.
-Targeted audience is around 6-10 in both.
-Both shows are truly appreciated by many from older age groups.
-Both had a specific gender they were targeting. (Pokemon had targeted males in the beginning, while Cardcaptors had initially targeted females. Good show nonetheless.)
It was on cartoon network years ago. this girl releases a bunch magic cards by accident, and she has to go find them. Unfortunately, they all are sentient, and manifest as powerful creatures that usually lay waste to everything. So she has to use her staff and cards she's all ready captured (she starts with the only card that doesn't escape, The Windy Card). She binds them her staff and it turns them back into card form, and they become bound to her will when she signs her name on the card.