A spell answers to the key the capture assigned it and to its slug, and a
name is slugged before it is tried, so /spells/fierce-berserk and
/spells/Fierce Berserk are the same spell. The key wins where the two
collide.

On every row of the capture being served the two columns happen to hold
the same string, so the pair only comes apart once the game renames a
spell: the key is stable across a rename and the slug follows the new
name, and both go on resolving.