MagicMerge

This is an extremely useful Merge tool which adds edge scatter and contamination to achieve a more optical effect.  Although it merges all channels, it only affects RGBA

 Controls are as follows:  

Alpha Tweak - animatable alpha control similar to addmix 

Inner scatter - blur size of inner contamilation

Inner Opacity - Inner scatter opacity

Inner Blur - An additional blur to remove bg detail from the inner scatter.

Outer Scatter - Blur Size of outer glow

Outer Opacity- Opacity of outer glow

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I hope you find it useful, I did.

 -Rachel Dunn