I will be showing this process with Deluge because its free and open-source with ability to use custom plug-ins. I would highly recommend using Deluge. If you guys want to see how to do it on other torrent clients, let me know in the comments.

• Download and Install Deluge: http://bit.ly/downloadDeluge.You may need to install a Microsoft Visual C++ package.

  

To install it:

• Click Yes. A web page will open.

• Click Download button and select your Windows type, x86 for 32-bit and x64 for 64-bit.

• Install It.

• You will now see a new item in categories called YaRSS2. Select it and go to Feed tab.

• Click on Add Feed and enter Feed name and url and click Save.

• You will see the feed added as shown.

• Go to Subscriptions tab and click on Add subscription.
  Here add Name, select RSS feed and type keywords to filter the torrents you need from the feed

• Now select Options tab to select Download location.

• Optionally, set Download location and ‘Move To’ location to where you want the file after downloading. This will prevent fragmentation of the files downloaded.
• At the end, your Subscriptions tab will come, You can also deactivate subscriptions from here or manually run them.
• That’s It!

Conclusion

Now you can just sit back and relax while your torrents add and download automatically! No need to add regular torrents manually again!
Hope you enjoyed!