its all good, i stole it from one of the older members here
used it for IT when i was still in high school.
Just so you know, I stole your text effect
i've found it, its called clipping masks
i imagine the process should be similar for other photoediting software
i think its called layer masking. i think... essentially, in photoshop, you can put a layer behind another layer, whatever is white in the foreground will turn transparent and show whats behind it. in may case, i've added a wave filter to dialga, put that layer behind the text and the effect is what you see
it does have an actual name, its not layer masking...its a masking or sorts
for your dialga sig are you using some layer mode to get that effect in the text (the texture inside the letters)?