The very nature of citing a spreadsheet with a proc rate infers you are incorrect. It is random, and that's how it was designed to be. The chance of getting an extra is 20%. Which means that over a long period or large data sample it should even out to be 1 in 5 procs the bonus transmute. Essentially, as an extreme example, you could go 4 months without a single proc and then get a proc every day for a month, which would then average out to be 20%. If it were not random you could guarantee every 5th transmute would proc.
With the most in-demand decks going for up to 20,000 Gold each, Basil believes that Darkmoon cards (12 of which when combined form a full deck) can earn scribes the highest possible WoW Gold. But he said that it takes intricate planning and logistics to really ramp up the Gold income from Darkmoon cards due to the constraints surrounding its crafting cooldown.
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