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copied!<p>Add another level of indirection. The <code>GetAvailableSpells</code> method isn't really an instance method, since it's the same for all instances. As you pointed you, you can't have an abstract static method, so instead move the type-specific stuff into an instance-based class factory. In the example below, <code>AvailableSpells</code> is a method of the <code>MagicSchool</code> abstract class, which has concrete subclasses <code>BlackMagic</code>, <code>WhiteMagic</code>, etc. The <code>Wizard</code> also has sub-types, but every <code>Wizard</code> can return the <code>MagicSchool</code> that it belongs to, giving you a type-safe, type-independent way to find out what the spells for any given <code>Wizard</code> object are without separate tables or code duplication.</p> <pre><code>public abstract class MagicSchool { public abstract string[] AvailableSpells { get; } public abstract Wizard CreateWizard(); } public abstract class Wizard { protected Wizard(MagicSchool school) { School = school; } public abstract Cast(string spell); MagicSchool School { public get; protected set; } } public class BlackMagic : MagicSchool { public override AvailableSpells { get { return new string[] { "zoogle", "xclondon" }; } } public override Wizard CreateWizard() { return new BlackWizard(this); } } public class BlackWizard : Wizard { public BlackWizard(BlackMagic school) : base(school) { // etc } public override Cast(string spell) { // etc. } } // continue for other wizard types </code></pre>

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