A syncretic belief system is one that blends traditions from different religions what is an example of this?

I believe you will be hard pressed to find any religion that has not been syncretised to some degree. Keeping it simple and obvious, what relation does colored eggs and bunny rabbits have with a Messiah or a resurrection? In Judaism, there are months named from purely pagan sources. For example, Tammuz is directly linked to sun worship cults of Babylon, and yet one of the months of the Jewish calender is Tammuz. I believe with some digging you'll find that no religion has been spared. However, do not confuse my Words as an indictment against religion. Not all syncretism had evil intentions behind it.