Make [spell] a synonym of [spells]

Question

several times i get this warning when tagging questions,

you seem to be attempting to create the tag [spell] but the tag [spells] already exist. Did you meant to use [spells]?

Or something to that effect.

Can we get a synonym mapping?

Answer 1

Done!

Normally we don't make synonyms for plural forms and such because the system redirects people, as you found, but this is such a high-traffic tag that an exception is likely very useful.