Potion effects mapped to their negative (inverse) implications.

Potions.java

    /** Potion effects mapped to their negative (inverse) implications. */
    public static final Map<PotionEffectType, PotionClassification> inversePotionEffectTypeImplications;
    static {
        HashMap<PotionEffectType, PotionClassification> temporaryMap = new HashMap<>();

        //  SLOW
        temporaryMap.put(PotionEffectType.SPEED, PotionClassification.HARMFUL);
        //  SPEED
        temporaryMap.put(PotionEffectType.SLOW, PotionClassification.BENEFICIAL);
        //  SLOW_DIGGING
        temporaryMap.put(PotionEffectType.FAST_DIGGING, PotionClassification.HARMFUL);
        //  FAST_DIGGING
        temporaryMap.put(PotionEffectType.SLOW_DIGGING, PotionClassification.BENEFICIAL);
        //  WEAKNESS
        temporaryMap.put(PotionEffectType.INCREASE_DAMAGE, PotionClassification.HARMFUL);
        //  Normal behavior
        temporaryMap.put(PotionEffectType.HEAL, PotionClassification.BENEFICIAL);
        /*
         ~ Behaves very oddly:
         ~ Level < 0 && < -5: Constant damage sound/animation. Damage is actually being taken, but amount is negative,
            causing no loss in health. Upon taking any positive damage (regular damage) via other means, the player dies
            instantly.
         ~ Level >= -5: Instant death.
         */
        temporaryMap.put(PotionEffectType.HARM, PotionClassification.HARMFUL);
        /* Inverse of JUMP
         ~ Side effect: appears to increase fall damage sensitivity.
         */
        temporaryMap.put(PotionEffectType.JUMP, PotionClassification.HARMFUL);
        //  Normal behavior
        temporaryMap.put(PotionEffectType.CONFUSION, PotionClassification.HARMFUL);
        //  Normal behavior
        temporaryMap.put(PotionEffectType.REGENERATION, PotionClassification.BENEFICIAL);
        //  Inverse of DAMAGE_RESISTANCE
        temporaryMap.put(PotionEffectType.DAMAGE_RESISTANCE, PotionClassification.HARMFUL);
        //  Normal behavior
        temporaryMap.put(PotionEffectType.FIRE_RESISTANCE, PotionClassification.BENEFICIAL);
        //  Normal behavior
        temporaryMap.put(PotionEffectType.WATER_BREATHING, PotionClassification.BENEFICIAL);
        //  Normal behavior
        temporaryMap.put(PotionEffectType.INVISIBILITY, PotionClassification.BENEFICIAL);
        //  Normal behavior
        temporaryMap.put(PotionEffectType.BLINDNESS, PotionClassification.HARMFUL);
        //  Normal behavior
        temporaryMap.put(PotionEffectType.NIGHT_VISION, PotionClassification.BENEFICIAL);
        //  SATURATION
        temporaryMap.put(PotionEffectType.HUNGER, PotionClassification.BENEFICIAL);
        //  INCREASE_DAMAGE
        temporaryMap.put(PotionEffectType.WEAKNESS, PotionClassification.BENEFICIAL);
        //  Normal behavior
        temporaryMap.put(PotionEffectType.POISON, PotionClassification.HARMFUL);
        //  Normal behavior
        temporaryMap.put(PotionEffectType.WITHER, PotionClassification.HARMFUL);
        //  Inverse of HEALTH_BOOST
        temporaryMap.put(PotionEffectType.HEALTH_BOOST, PotionClassification.HARMFUL);
        //  Normal behavior
        temporaryMap.put(PotionEffectType.ABSORPTION, PotionClassification.BENEFICIAL);
        /* HUNGER
         ~ Side effect: adds 10 absorption hearts at the start of the effect.
         */
        temporaryMap.put(PotionEffectType.SATURATION, PotionClassification.HARMFUL);

        inversePotionEffectTypeImplications = Collections.unmodifiableMap(temporaryMap);
    }