How do you get Gods Unchained?

So, how exactly does one acquire Gods Unchained? Is it through a direct purchase on a website or platform? Do you have to trade for it with other players? Is there a specific process or method that one should follow to ensure they receive their cards securely and safely? Additionally, are there any limitations or restrictions on who can obtain Gods Unchained, such as geographical location or age requirements? I'm curious about the entire process and would appreciate a comprehensive explanation of how to get my hands on this popular blockchain-based trading card game.