[Magic] Add tiers to enfeeblement songs

[Xaver-DaRed]

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• I understand that if I do not agree to the following points by completing the checkboxes my PR will be ignored.
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• I have tested my code and the things my code has changed since the last commit in the PR and will test after any later commits.

What does this pull request do?

What title sais. This will ensure that, for instance, only sleep II and sleepga II can overwrite lullabies (any of the 4)

Steps to test these changes

Cast lullaby. Cast sleep I (no effect). Cast sleep II (overwrite)