Hearthstone-style graphics with After Effects
Here's a few effects to take a look at, which may get you closer to the result you are looking for. These effects are based on your helpful thumbnails:

Effect > Stylize > Glow / Trapcode Shine (uSampler1)

Effect > Noise &amp; Grain > Fractal Noise + Turbulent Displace (uSampler2)

Effect > Generate > 4-Color Gradient (uSampler3)

Effect > Noise &amp; Grain > Fractal Noise w/ Default Settings (uSampler4)

Effect > Color Correction > Colorama (uSampler5)

These styles require heavy experimentation, so play around with Track Mattes, Blending Modes, and importing textures and other source imagery to help achieve these results. Good luck!