We have a nice autocard feature, which lets you easily link to Magic: The Gathering cards like Lightning Bolt with the following syntax:
[mtg:Lightning Bolt]
When this feature was first introduced, the resulting link was different, e.g. http://www.wizards.com/magic/autocard.asp?name=Lightning%20Bolt
instead of https://gatherer.wizards.com/Pages/Card/Details.aspx?name=Lightning%20Bolt
. However, those links don't work anymore and they're quite widespread: this query lists all 1,786 of them.
I was planning to ask the Community Managers if they can assist; it looks very much like repairing broken links for which they have a script that can do so without bumping posts. Any thoughts from your side before I reach out to them?