Proliferate cards, like Cankerbloom and Yawgmoth, Thran Physician, help a ton here too, giving you even more experience to work with
Grade if the error is on a valuable base card and the label adds authentication value
The middle option, destroy target enchantment, is subtle but very important, as the targeting allows you to destroy an Always Watching or Evolutionary Leap even with a Gryffs Boon or Oath of Nissa on the battlefield
After that I have been more careful about my trades however, but I still have that same Pidgey and Vulpix this day (lost the Pidgeotto once, one of the only two cards I ever lost as far as I can remember (other being Neo Genesis Furret) )
Artist Mark Bagley is one of the longest-tenured Spider-Man artists, with multiple stints on Amazing Spider-Man and a lengthy one on the original Ultimate Spider-Man comic
Sorin, Imperious Bloodlord got rebalanced with a -3 ability that can no longer cheat out Defiant Bloodlord