Self explanatory, I guess.for those, who have never played Starcraft or Starcraft 2 here is little trivia:Additional pylons is an internet joke that come from the in-game message. You can see 3 pylons on the background. The idea is that Rarity's cutie-mark can mean not only 3 gems, but 3 pylons.However, Terran Space Marine thinks different. For him it more looks like a stack of minerals. And the "Mule" is a terran Harvester for the minerals in SC2.Oh, Forgot to mention - it's a crossover between Friendship is magic and Starcraft ^^----------------------------------------------------Starcraft (c) BlizzardMLP (c) HasbroFiM by