It was Beast of Outlandish Size that I was leaning towards. Guess one could rule that it only works on animals of Size 0 or lower then. That would also mean that Preternatural Growth and Shrinking would fail if cast on someone with Size +1.
To the wonderful people doing the reviews of the spells:
Let's make a push on Aquam, Muto and Perdo are almost done, and once we have Rego done as well, I can move on to Auram.
Also, i have added sample pages and my idea for a cover page for the final PDF, so feel free to comment on them. For now, because these are just ideas, please do not share them.
They look good to me. I also did some math for Frothing Wrath of the Ocean's Master since you found the idea interesting.
ReAq 125 (Base 10, +1 Touch, +2 Group, +2 Sun, +16 size, +2 very unnatural) is enough to make a "world wide boat wiper" since it can affect 366.9 billion cubic miles and all the oceans are 321 billion cubic miles (not counting connected seas like the Med and North). Heck, even with only +15 Size it would be enough to affect the top 10% of all the oceans and connected seas in the world and could most likely do a total boat wipe.
It looks very good. However, I see the sample page including spells is an image. I highly recommend having a searchable PDF.
The resulting pdf will be searchable. The sample pages were exported as images, just to give an idea of the layout, but the final file will have live text.