Why is this ? Given all we know with populate and Anointed Procession / Parallel Lives it looks like this should be or .

The type of the "plus one" should be specified. You will notice Anointed Procession says "of those" to clarify the additional tokens are not just any type but mirror the created types.

Why is that important? Because with the correct wording you can clarify whether you get only a forth token of one of the three types or an additional type of each of the types from Bestial Menace.

Your choice is between Winding Constrictor and Animation Module/proliferate.

Possible fixes:

Variant A:

• "If you would create one or more tokens, create that many tokens plus one of each kind of those tokens instead."

Variant B:

• "If you would create one or more tokens, choose one kind of token you would create this way. Create the tokens plus one of the chosen kind instead."
• "If you would create one or more tokens, create those tokens plus an additional token of any kind created this way instead."

I think blue is totally a color that can pull of populate. It's a matter of the environment, really. Generally white is the best token producer. Green gets this because they are good with creatures in general and blue is good at making copies.

But I wouldn't even exclude it from a gold card containing red or black as secondary if a set theme is supported by it - similarly to how Corpsejack Menace makes more sense in its environment.