"These shamans live in Canada."
Translation:Nämä shamaanit asuvat Kanadassa.
Off top of my head, I can't think of any nouns that end with "it" that aren't plural. However, it would be in error to consider "it" one unit, i.e. a single morpheme. The "it" at the end of "shamaanit" contains the nominative plural marker "t" and a fragment from the word stem. The plural markers for other grammatical cases are "i" and "j".
I agree with Kristian with the proviso, that the word is a nominal (a noun, an adjective or a numeral) to begin with, because there are a lot of verbs in the simple past tense for the singular second person, that end with -it (e.g. luit : you read (past)).
The letter -t is the plural marker for the nominative only, for other cases it's -i- or if that would end between two vowels, then -j- (this happens quite often).
- (nom.) lehdet : leaves
- (gen.) lehtien : leaves'
(part.) lehtiä : (some) leaves ...
(nom.) talot : houses
- (gen.) talojen : houses'
- (part.) taloja : (some) houses ...