Card Catcher

I came up with a idea, but couldn't get it going. So I told a.i. a watered down version of my idea, and it barely got it out. It's a Rock-paper-scissors card game, mostly you're constantly switching out cards to defeat the CPU. 

I'd tell you how to play here, but this would ruin it all. I will reveal that elements are: Fire, water, plant, dragon, sword and echo 

Also open to constructive criticism and tools that could help me do this myself. I only have a android and kindle to use.