The Emperor arises from his ghastly golden throne to spook the children of Terra and haunt the Traitor Legions.
Pls don't do this! in WOW a carved pumpink can be funny but here in 40K there is only WAR dont make silly real/mmo festivals pls OR Make sesonal event BUT disengaed from realty PLS
Nothing bad has ever come from implementing real world holidays into fictional universes, has it? I mean, imagine some Life Day celebrated by some large teddybears living on big big trees... that must be great, right? [/sarcasm] Please, just... don't.
Halloween patch for space wolves could be we turn into the warriors of the 13th company and for that day we get the gate Psychic power to allow us to teleport onto the planet and ambush chaos.