Stat Appliers

//Example use would be Damage (source) to Health (target)
//which would lookup the sources Damage stat and deal that much damage to the target's Health stat.
  public abstract class ScriptableStatInteractor : ScriptableObject
  {
      [SerializeField]
      protected ModularStat sourceStat = null;
      [SerializeField]
      protected ModularStat targetStat = null;

      public abstract int Apply(StatBlock sourceBlock, StatBlock targetBlock);

      public abstract int ApplyInverse(StatBlock sourceBlock, StatBlock targetBlock);

      public abstract bool CanApplyWithoutOverflowOrUnderflow(StatBlock sourceBlock, StatBlock targetBlock);

      public abstract bool CanApplyInverseWithoutOverflowOrUnderflow(StatBlock sourceBlock, StatBlock targetBlock);
  }

Stat Block Example

public class StatBlock : MonoBehaviour {
        [SerializeField]
        private List<StatWrap> stats = new List<StatWrap>();
    
        private class StatWrap {
            public ModularStat targetStat;
            public int currentVal;
            public int maxVal;
        }

        public bool TryGetStat(ModularStat stat, bool maxValue, out int statValue)
        {
            for (int i = 0; i < stats.Count; i++)
            {
                if (stats[i].targetStat == stat)
                {
                    statValue = maxValue ? stats[i].currentVal : stats[i].maxVal;
                    return true;
                }
            }
            statValue = int.MinValue;
            return false;
        }
}

Stats Example

[CreateAssetMenu(menuName = "ModularStats/Stat")]
[Serializable]
public class ModularStat : ScriptableObject {
}