Creating a simple card game (Set) and I have a function in the model that deals X cards onto the deck. Currently, when I click the deal card button they all show up at once so I added the timer so that they would appear one after another. This gives the error "Escaping closure captures mutating 'self' parameter" Any ideas on what I can fix? mutating func deal(_ numberOfCards: Int) { for i in 0..<numberOfCards { Timer.scheduledTimer(withTimeInterval: 0.3 * Double(i), repeats: false) { _ in if deck.count > 0 { dealtCards.append(deck.removeFirst()) } } } }