Распечатать свойства объекта

Я не могу получить свойства определенной карты в этом коде, она всегда печатает null и я не знаю почему. Я из мира Php-HTML, и я новичок в JAVA.

Это от Opportunity.java

package opportunity;
import java.io.*;
import java.util.Collections;
import java.util.List;
import static java.util.stream.Collectors.toList;
import java.util.stream.IntStream;
import java.util.stream.Stream;
import opportunity.Card.CardType;

public class Opportunity {
    /*Player 1 */
    public int p1_money = 10000;
    public int p1_card_d = 40;
    public int p1_card_h = 0;
    /*Player 2 */
    public int p2_money = 10000;
    public int p2_card_d = 40;
    public int p2_card_h = 0;

    /**
     * @param args the command line arguments
     * @throws java.io.IOException
     */
    public static void main(String[] args) throws IOException {


        System.out.print("***************Opportunity***************\n");

        final Card card1 = new Card(Card.CardType.EVENT, "Get Tax Returns").
        setProperty("cost", "0.00").
        setProperty("Effect", "Effect: Earn money equal to the\n"
                + "maximum income each of your\n"
                + "properties can give you,\n"
                + "depending on their level.");
        final Card card2 = new Card(Card.CardType.EVENT, "BIR Hunting Begins").
        setProperty("cost", "0.00").
        setProperty("Effect", "Effect: An opponent loses\n"
                + "money equal to 50% of the\n"
                + "maximum income each of\n"
                + "their properties can give him or her,\n"
                + "depending on the level of the\n"
                + "property.");
        final Card card3 = new Card(Card.CardType.EVENT, "Restore Balance").
        setProperty("cost", "10000.00").
        setProperty("Effect", "Effect: The total income of all\n"
                + "the players becomes equal to\n"
                + "the income of the player\n"
                + "with the lowest income.");

        final List<Card> deck = Stream.of(CardType.values()).
        flatMap(type -> IntStream.rangeClosed(1, 4).mapToObj(num -> new Card(type, "CardName" + num))).
        collect(toList());
        Collections.shuffle(deck);

        System.out.println(deck.get(0).getProperty("Effect"));


    }

}

И это коды от Card.java

package opportunity;

import java.util.*;


public class Card {
    public enum CardType {
        EVENT,
        PROPERTY,
        ASSET;
    }
    private final CardType cardType;
    private final String cardName;
    private final Map<String, String> properties = new HashMap<>();

    Card(final CardType cardType, final String cardName) {
        this.cardType = cardType;
        this.cardName = cardName;
    }

    public Card setProperty(final String name, final String value) {
        properties.put(name, value);
        return this;
    }

    public String getProperty(final String name) {
        return properties.get(name);
    }
}

Он всегда возвращает это:

run:
***************Opportunity***************
null
BUILD SUCCESSFUL (total time: 0 seconds)

хотя я ставлю индекс на get()