At the time, their answer was the Tribal supertype which allowed everything from a land to an enchantment to a sorcery to count as a Goblin spell or Elf permanent when it matters

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Collectors seem to have also bought into this rationale and, for all intents and purposes, if a card exists with the same art and set symbol on both set lists, theres no real reason to figure out which version youre holding
The copy will resolve before the original spell does
The beatdown versions focus on getting as much good stuff into play as fast as possible and swarming over for the win, often using Overrun