In Carelian dialect of Finnish, excessive case is commonly used as ablative case corresponding to the locative case essive, when the latter is used as locative particle.   Although  excessive case is quite recent addition to Balto-Fennic languages, the locative forms of essive have been passed on from ancient Fenno-Ugric language, and they are used in the modern day Finnish only idiomatically as particles.   The ways to use excessive case in combination of these particles are examined in archived material as well as their present-day use on the Internet.   Excessive is based on the essive case,  a fact that is clearly demonstrated by the fact that it does not agree the Finnish consonant gradation, but uses the the same stem as essive, most probably through analogical change.   In some less common instances the excessive case can be found to correspond to the common present day use of the essive case,  one indicating status, role, or position.  In these cases, the nouns inflected in excessive case have been found to hint to the subject being of such status for a limited and determined time, such  as POW or exchange student.  From this I conclude that the excessive case has temporary implications, and consequently that the choice of essive case as predicative modifier signals temporary implications in the sentence.