public Object Convert(Object[] values, Type targetType, Object parameter, CultureInfo culture)
        {
            if (values != null && values.Length == 3 && values[0] is PartyMemberPowerSet && values[1] is Dictionary<String, Int32> && values[2] is GiftSortOrder)
            {
                var powerSet = values[0] as PartyMemberPowerSet;
                var requiredExperienceByType = values[1] as Dictionary<String, Int32>;
                var sortOrder = (GiftSortOrder)values[2];

                var availableGifts = new Power[]
                {
                    powerSet.Power1,
                    powerSet.Power2,
                    powerSet.Power3
                }
                .Where(x => x.IsUnlocked)
                .SelectMany(x => x.Gifts)
                .Where(x => x.GiftType.IsUnlocked)
                .Where(x => requiredExperienceByType.ContainsKey(x.GiftType.Id) && requiredExperienceByType[x.GiftType.Id] >= x.RequiredAbilityExperience)
                .OrderBy(x =>
                {
                    switch (sortOrder)
                    {
                        case GiftSortOrder.OffenseSupportDefense:
                            return x.GiftSubtype.Name == GiftSubtype.Offensive.Name ? 1 :
                            x.GiftSubtype.Name == GiftSubtype.Support.Name ? 2 :
                            3;
                        case GiftSortOrder.OffenseDefenseSupport:
                            return x.GiftSubtype.Name == GiftSubtype.Offensive.Name ? 1 :
                            x.GiftSubtype.Name == GiftSubtype.Defensive.Name ? 2 :
                            3;
                        case GiftSortOrder.DefenseOffenseSupport:
                            return x.GiftSubtype.Name == GiftSubtype.Defensive.Name ? 1 :
                            x.GiftSubtype.Name == GiftSubtype.Offensive.Name ? 2 :
                            3;
                        case GiftSortOrder.DefenseSupportOffense:
                            return x.GiftSubtype.Name == GiftSubtype.Defensive.Name ? 1 :
                            x.GiftSubtype.Name == GiftSubtype.Support.Name ? 2 :
                            3;
                        case GiftSortOrder.SupportOffenseDefense:
                            return x.GiftSubtype.Name == GiftSubtype.Support.Name ? 1 :
                            x.GiftSubtype.Name == GiftSubtype.Offensive.Name ? 2 :
                            3;
                        case GiftSortOrder.SupportDefenseOffense:
                            return x.GiftSubtype.Name == GiftSubtype.Support.Name ? 1 :
                            x.GiftSubtype.Name == GiftSubtype.Defensive.Name ? 2 :
                            3;
                    }

                    return 0;
                })
                .ThenBy(x => x.Ability.Name);

                return availableGifts.ToArray();
            }
            return new Gift[0];
        }