Are you sure this is usable commercially? I know there aren't any Final Fantasy assets used, but I'm worried that using this in a commercial project could cause some issues...
Viewing post in Triple Triad for RPG Maker MZ comments
Yes it is completely fine using it commercially, I would only suggest not using Triple Triad as a name on your game.
It is 100% ok to use it commercially because mechanics are not under any copyright, so feel free to use it in your game :), there are 5~6 games commercially today that use this same plugin (or its MV/VX Ace version that I coded previously)