Dungeons & Dragons

Chaos Space Marines: As a whole, many units and unit builds are simply so powerful (the "Lashprince" being the most common, also Obliterators and Plague Marines) that they are used in exclusion of other units that are otherwise perfectly decent (Chaos Space Marines themselves, Chaos Raptors, Lesser Daemons), and others that are so terrible that no one dares use them (Dreadnoughts, Possessed, and Spawn). As such, the most commonly sighted Chaos Space Marine army features two "Lashprinces", nine Obliterators, and the remaining points are spent entirely on Plague Marines, when other armies would kill to have even some of the less-popular units in the army book.