StreetForum/Assets/Resources/Scripts/ActionCardSelector.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

using UnityEngine.UI;

public class ActionCardSelector : MonoBehaviour
{
    
    public List<Texture> cards;    // Start is called before the first frame update
    public GameObject cardTexture;
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        
    }

    public void SelectCard() 
    {
        int randomAction = Random.Range(0, cards.Count);

        RawImage m_RawImage = cardTexture.GetComponent<RawImage>();
        //Change the Texture to be the one you define in the Inspector
        m_RawImage.texture = cards[randomAction];
    }
}