Need help/tips to create a very VERY simple inventory system.

Unity Engine
,
2

Let’s start with using some code tags:

using UnityEngine;
using UnityEditor;

static class CardUnityIntegration 
{

    [MenuItem("Assets/Create/CardAsset")]
    public static void CreateYourScriptableObject() {
        ScriptableObjectUtility2.CreateAsset<CardAsset>();
    }

}

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

public enum TargetingOptions
{
    NoTarget,
    AllCreatures, 
    EnemyCreatures,
    YourCreatures, 
    AllCharacters, 
    EnemyCharacters,
    YourCharacters
}

public class CardAsset : ScriptableObject 
{
    // this object will hold the info about the most general card
    [Header("General info")]
    public CharacterAsset characterAsset; // if this is null, it`s a neutral card
    [TextArea(2,3)]
    public string Description; // Description for spell or character
    public Sprite CardImage;
    public int ManaCost;

    [Header("Creature Info")]
    public int MaxHealth; // =0 => spell card
    public int Attack;
    public int AttacksForOneTurn = 1;
    public bool Charge;
    public string CreatureScriptName;
    public int specialCreatureAmount;

    [Header("SpellInfo")]
    public string SpellScriptName;
    public int specialSpellAmount;
    public TargetingOptions Targets;

}

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

public class Deck : MonoBehaviour {

    public List<CardAsset> cards = new List<CardAsset>();

    void Awake()
    {
        cards.Shuffle();
    }

}