Board Thread:Questions and Answers/@comment-198.82.203.145-20151109003042/@comment-26480385-20151118171554

Sorry for the late reply? If you participate in events, there are three cards you can get easily through point rewards, they're always quite strong 3*s. By reaching a certain rank at the end of the event, by having more points, there is another 3* you can get (Currently, to get it you need to be at least rank 150,000 which is really easy to get)

For stronger cards with a higher rarity, the event also has a chance to drop a 4*, which is also achieveable by collecting 600,000 points in the event, and a 5* which is achieved by collecting 1,000,000 points. For ranking, there is a 4* achieved by reaching rank 25,000 or lower, and a 5* for reaching rank 7,500 or lower. You can read about the current event here or a more descriptive guide to events here, created by a Reddit user