Showdown abilities.js for Sage

/*

Ratings and how they work:

-2: Extremely detrimental
      The sort of ability that relegates Pokemon with Uber-level BSTs
      into NU.
    ex. Slow Start, Truant

-1: Detrimental
      An ability that does more harm than good.
    ex. Defeatist, Normalize

 0: Useless
      An ability with no net effect on a Pokemon during a battle.
    ex. Pickup, Illuminate

 1: Ineffective
      An ability that has a minimal effect. Should never be chosen over
      any other ability.
    ex. Damp, Shell Armor

 2: Situationally useful
      An ability that can be useful in certain situations.
    ex. Blaze, Insomnia

 3: Useful
      An ability that is generally useful.
    ex. Volt Absorb, Iron Fist

 4: Very useful
      One of the most popular abilities. The difference between 3 and 4
      can be ambiguous.
    ex. Technician, Protean

 5: Essential
      The sort of ability that defines metagames.
    ex. Drizzle, Shadow Tag

*/

exports.BattleAbilities = {
    "iceslick": {
        desc: "Raises bearer's Speed in a hailstorm.",
        shortDesc: "Raises bearer's Speed in a hailstorm.",
        onModifySpe: function (speMod, pokemon) {
            if (this.isWeather('hail')) {
                return this.chain(speMod, 2);
            }
        },
        id: "iceslick",
        name: "Ice Slick",
        rating: 2,
        num: ???
    },

    "permafrost": {
        desc: "Raises bearer's Defense in hailstorm.",
        shortDesc: "Raises bearer's Defense in hailstorm.",
                onModifyDefPriority: 6,
        onModifyDef: function (def, pokemon) {
            if (this.isWeather('hail')) {
                return this.chainModify(1.5);
            }
        },
        id: "permafrost",
        name: "Permafrost",
        rating: 2,
        num: ???
    }

    "braveheart": {
        desc: "Increases bearer's Defense when under a status ailment.",
        shortDesc: "Increases bearer's Defense when under a status ailment.",
        onModifyDefPriority: 6,
        onModifyDef: function (def, pokemon) {
            if (pokemon.status) {
                return this.chainModify(1.5);
            }
        },
        id: "braveheart",
        name: "Brave Heart",
        rating: 3,
        num: ???
    },
};