This can be very useful when the opponent utilizes Spell Cards to enhance their Monster's attack, by redistributing the advantage which undermines the opposing strategy
Ominous Traveler Spellbook Dominating Vampire Falkenrath Pit Fighter Tovolar, Dire Overlord Steelclad Spirit Champion of the Perished Vampire Socialite Wolfkin Outcast Patrician Geist Heron-Blessed Geist Headless Rider Stromkirk Bloodthief Howlpack Piper Shipwreck Sifters Archghoul of Thraben Bladestitched Skaab Tribal support in a can
For example, Pokmon routinely prints cards in multiple rarities in a set, so that competitive players can afford to build decks, while collectors can purchase high rarity cards for their lucrative collections
Balefire Dragon Balefire Dragon was certainly a powerful Limited card, but Commander is the main reason this is here
(1) When a Harpie Lady or Harpie Lady Sisters you control is destroyed by battle: You can Special Summon 1 Harpie monster with a different original name from your Deck
This is because cube is far more cluttered than constructed