We know there are countless fields provided to us free of cost by captain very generously, some of which are sometimes comparable to paid fields. One example being Alchemical Revision of Genius , This field in my (and some more) opinion is on par with some paid fields from gum-road but captain made it free for us.
So, this is simple thread where members can post fields which in their opinion is a blessing to be made free. Basically, hunting for most premium yet free fields lol.
