Whichever vs Whomever - What's the difference?

Whomever is a related term of whichever.

is that whichever is any one or a number of a group while whomever is Objective case of whoever.

is any one or a number of a group.

(en determiner)

Any one or a number of a group.

Choose whichever card you like.

(English Pronouns)

Any one or a number of a group.

Take a card; whichever you want!

It may be preferable to use whoever'' (subject) or ''whomever (object) when referring to a group of people.

* whomsoever

(en-pron)

* Max Beerbohm:

“To impose his will on whomever he sees comfortably settled.”