• The 3 orange gems or crystals at the side of the horn in this card's artwork represent the 3 turns that the last effect of this card needs to resolve
  • In Norse mythology, Gjallarhorn is the horn with which the gatekeeper god, Heimdallr, announces Ragnarök.
    • Presumably, Heimdallr is meant to be the man in this card's artwork.
  • Gjallarhorn is stated to signal Ragnarok, in which all the Gods are meant to die. This card's effect is a reference to that as it results in all of the user's monsters being banished.
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