The current autocard link syntax works great, but it can be a bit awkward to use with plural names. It's easy to change
[mtg:Lightning Bolts] to
[mtg:Lightning Bolt]s. Getting correct links to cards like
[mtg:Scions of Oona] requires restructuring text to use the singular name, though.
The easiest method to address this, at least that I can see, is what Wikipedia does with its link syntax:
[mtg:card name|optional text overriding the link text]. Then we can easily post about how two
[mtg:Scion of Oona|Scions of Oona] give each other shroud.