Recently I made a website that features some useful tools related to Clash Royale, some of these include a Card Request Calculator, Total Deck Strength Calculator, and most recently a Random Deck Generator.
The Random Deck Generator is easy to use and features a filter allowing you to choose an arena and disabling the appearance of Legendary cards. This was mainly made to be for entertainment purposes, however some people say they find use in it using random decks against their friends/clanmates.
So try it out and tell me what you think.
I will try to improve this in every viable way, so don't hesitate to make some suggestions