professorderpy asked: This is a dumb question, but was Morph influenced by Yu-Gi-Oh? Or am I just drawing baseless comparisons?
Morph came about because the Rules Team came up with an interesting way to make Camouflage and Illusionary Mask work. They then realized that this new rule can be the cornerstone of a new mechanic. The Rules Team pitched it to R&D and the rest is history.