While I like the idea, the card and ability name ought to be changed.
"Retardead" sounds similar to "Retarded" which developed into slang for "Mentally Handicapped" (to be politically correct)
Whilst I have no problem with this word, as it has been deprecated and disregarded by the scientific community, some other people will. The ability name also could use some changing, as it further allows readers to infer that you are saying something inappropriate (pardon my vagueness)