Being able to ramp the best land out of the top four cards of your deck at instant speed is already very useful, but the fact that you can still draw one of them into your hand as a fall back means that you wont have a major downside (see Growth Spiral for a similar effect)
Unlike a lot of mechanics since, however, Lessons have been featured in a few sets now and have become a big part of competitive Magic
The specially foiled Powerline Worlds Greatest Rock Star is a great pick up
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For more information on those treatments, check out the Collecting Kamigawa: Neon Dynasty article
Now, one of your opponents can decide which one of those cards you get to keep, but if your deck boasts some redundancy, it will always be a win-win for you, right