What are PDC events and why play in them?
PDC event are player-run events, usually hosted on a weekly schedule. Like most MTG events, they usually consist of Swiss system tournament (usually 3-5 rounds) followed by a single elimination for the leaders (usually Top 4 or Top 8). The events are free but donations for prizes are welcome. Apart from end of season championship events, they are usually open to everyone. Just like regular tournaments, they allow player to have fun while testing their skills in a more structured and competitive environment than casual games. There is also the chance of winning prizes and earning points towards participation in end of season championships.