You'll use the checklist card any time it's important to keep the identity of your card secretin other words, when it's in your library, in your hand, or exiled face down
Academy Manufactor Math, the card
However, blue also gives you plenty of good reasons to tap your artifacts: And then there are the multicoloured cards, mostly blue: It seems to me that while certain groups of cards overlap perfectly, some clash in the most horrible way, precisely in the same colours where they should overlap
The soft glow treatment in Kamigawa: Neon Dynasty blends colors beautifully, making cards feel otherworldly
Its like eating your vegetables
Hes one of the strongest mono-blue commanders available (even if youre on a budget), but can also be built to be a lot more casual and fun