No interest on Credit Card

I amgoing apply for a credit card. I do have one from a bank but I want to get another for ease and comfortability. My current credit is fine for everything but Interest is quite higher. So I am looking for something cheaper cheaper like Mint Credit Cards. Mint Credit card is the best one I've every found. You can get facility of no interest on balance for 13 months. I bet you wont find anything like that anywhere.