Questions & Answers about Minä sekoitan pakan, ja sitten kukin nostaa kortin.
Why is kukin used here instead of the genitive kunkin?
In this sentence, kukin is the subject of the action (the one doing the drawing), so it stays in the basic nominative form. You would use kunkin if "each one" owned something or was the object of an action.
Why is the verb nostaa in the third-person singular form?
Just like the English word "each", kukin is a grammatically singular pronoun. Therefore, it requires a singular verb (nostaa, rather than the plural nostavat).
Why are both pakka (deck) and kortti (card) written with an -n ending (pakan, kortin)?
They are singular total objects. Because the actions of shuffling the deck and drawing a card are seen as complete actions, their objects take the accusative case. For singular nouns, this case looks exactly like the genitive, ending in -n.
Doesn't the verb nostaa usually mean "to lift"?
Yes, its primary meaning is "to lift" or "to raise". However, in the context of board games and card games, nostaa is the standard Finnish verb for "drawing" a card or a game piece from a pile.