Learn Portuguese (Portugal): Posso baralhar outra vez?

Posso comes from poder, which is used here to ask for permission (May I). If you used consigo, which comes from conseguir, you would be asking about your physical ability or success in doing the action, as if asking if your hands were physically capable of shuffling the cards.

Does baralhar only mean to shuffle cards?

While it is the standard word for shuffling a deck of cards, baralhar is also commonly used in everyday conversation to mean to confuse or to mix up. For example, if someone gives you complicated instructions, you might complain that the details will baralhar you.

Can I use de novo instead of outra vez to say again?

Yes, de novo and novamente also mean again and are perfectly correct here. However, outra vez (literally meaning other time) is incredibly common in spoken European Portuguese and is often the most natural choice for repeating a simple action.

Why is baralhar left in its dictionary form instead of being conjugated?