You can kill an equipped creature with reconfigure the same way you could kill any normal artifact or piece of equipment
"One major question that kept popping up" was, as Daniel put it, "can I put this Lesson in my deck like a regular card
(You could argue Brilliant Stars is the more over-all valuable set, given the number of over $20 cards in there, but even its alt-art Charizard V doesnt quite scrape the $200 mark.) These are, of course, their ungraded prices, with numbers vastly increased if sent of to companies like PSA to receive a grade, especially if they can achieve that all-conquering PSA 10
The instant burn that could potentially take out two dorks in the right circumstances or tapping and drawing a card was incredibly versatile, and gave you tools against both aggro or control/combo in your main deck without needing to sideboard later
With the current power level of cards in Modern, perhaps
Almost all legends (with a handful of exceptions) will have a gold or orange set symbol, which means theyre rare or mythic rare, respectively