I bought the "Legendary Color Pack" with coins from the shop, intending to save it for the BOSS level. However, I mistakenly used it in the beginner's field. Just as I was about to take it back, I discovered that the "Automatic Sort Pen" in the pack could attract blocks of the same color, triggering the "Lazy Color Mixing" effect, allowing me to complete the 3x3 grid arrangement goal while lying down.