Card Trivia:Delta Reactor

"Delta Reactor":

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• "Flying Fortress SKY FIRE", "Spell Reactor・RE", "Summon Reactor・SK", and "Trap Reactor・Y FI" appear in this card's artwork.

• This card's name references a delta formation, a flight pattern used by military air forces where multiple flying objects will come together in the shape of the letter "V" in order to fly more efficiently.
  • The definition of the delta formation is reflected in this card's artwork, which depicts the three "Reactor" monsters positioned in a "V"-shaped formation. This is reinforced by the fact that the monsters are styled after World War II fighter and bombardment aircraft.
  • The delta formation is derived from the Greek letter "delta", where its uppercase form resembles the shape of a triangle (Δ). The triangle is a polygon consisting of three different points and lines to form the shape, reflecting this card's effect to Special Summon "Flying Fortress SKY FIRE", which is the combined form of the three required "Reactor" monsters.

• This card's effect to Special Summon "Flying Fortress SKY FIRE" has been incorporated into the OCG/TCG effect of "Summon Reactor・SK".