Remena les cartes abans de repartir.

Remena is the informal singular command form, used when speaking to one person as tu.

It comes from the verb remenar.

So:

• remenar = to shuffle / mix / stir
• remena = shuffle! / mix!

In this sentence, it means Shuffle the cards.

Catalan often leaves out subject pronouns when they are clear from the verb form.

So instead of saying Tu remena..., Catalan normally just says Remena...

The ending -a here already tells you it is a command directed at tu.

Remenar is a very common verb with a broad meaning: to stir, mix, move around, shuffle.

In the context of cards, it means to shuffle.

In other contexts, it can mean things like:

• remenar la sopa = stir the soup
• remenar papers = rummage through papers

So the exact translation depends on the context.

Les cartes means the cards.

Catalan often uses the definite article where English sometimes might not focus on it as much. Here it refers to the specific cards being used, so les cartes is natural.

Also:

• carta = card / letter
• cartes = cards / letters
• les = the, feminine plural

Since cartes is feminine plural, the article is les.

Because carta is a feminine noun in Catalan.

So:

• singular: la carta
• plural: les cartes

This is something you simply learn with the noun, just as in many other Romance languages.

Abans de means before.

It is the normal expression used before:

• a noun
• or an infinitive

Examples:

• abans de sopar = before dinner / before having dinner
• abans de sortir = before leaving

So:

• abans de repartir = before dealing

Because in Catalan the usual structure is abans de + infinitive/noun.

So Catalan says:

• abans de repartir

not just:

• abans repartir

This is a fixed pattern you should get used to.

After abans de, Catalan uses the infinitive when talking about an action in a general way, especially when the subject is understood.

So:

• abans de repartir = before dealing

This works like English before dealing, where English also uses a non-finite verb form.

Not only that. Repartir is a more general verb meaning to distribute, hand out, share out.

But in the context of card games, it naturally means to deal.

For example:

• repartir cartes = deal cards
• repartir menjar = distribute food

So the card meaning comes from the context.

Yes. That is also correct.

Both mean the same thing:

• Remena les cartes abans de repartir.
• Abans de repartir, remena les cartes.

The second version just puts the time expression first for emphasis or style.

The command form changes depending on who you are addressing.

• Remena les cartes... = to one person, informal (tu)
• Remeni les cartes... = to one person, formal (vostè)
• Remeneu les cartes... = to more than one person (vosaltres)

So the rest of the sentence stays the same, but the imperative verb changes.

For a negative command, Catalan does not use the same imperative form. It uses the present subjunctive.

So:

• Remena les cartes... = Shuffle the cards...
• No remenis les cartes... = Don’t shuffle the cards...

Other persons:

• No remeni les cartes... = formal singular
• No remeneu les cartes... = plural

This is a very common pattern in Catalan.

Yes, in many contexts barrejar les cartes is also a natural way to say shuffle the cards.

Very roughly:

• remenar = mix/move around/stir/shuffle
• barrejar = mix/shuffle

In card contexts, both can work, though actual preference may vary by speaker or region. The sentence you have is perfectly normal, and remenar fits well here.