interfaceSegregationFixed.cs

    interface ICanHex
    {
        void Hex();
    }

    interface ICanHeal
    {
        void Heal();
    }

    interface ICanDisappear
    {
        void Disappear();
    }

    interface IHaveFire
    {
        void Fire();
    }

    interface IHaveIce
    {
        void Ice();
    }

    interface IHavePoison
    {
        void Poison();
    }

    public class Witch : ICanHex,ICanHeal,ICanDisappear,IHaveFire,IHaveIce,IHavePoison
    {
        public void Hex(){}
    
        public void Heal(){}

        public void Disappear(){}

        public void Fire(){}

        public void Ice(){}

        public void Poison(){}
    }
    
    public class Priest : ICanHeal, IHaveFire
    {
        public void Heal(){}

        public void Fire(){}
    }
    
    public class FrostMage : IHaveIce
    {
        public void Ice(){}
    }