Goat Format · April 2005
What the Goat Format rulings add to, or change from, the rulings above.
"XYZ-Dragon Cannon" may only be Special Summoned through its effect.
"XYZ-Dragon Cannon" may not be Special Summoned from the Graveyard.
"XYZ-Dragon Cannon" is never considered properly Fusion Summoned.
Fusion substitution monsters may not be used to Special Summon "XYZ-Dragon Cannon."
Face down "X-Head Cannon", "Y-Dragon Head," and "Z-Metal Tank" may be removed from play to Special Summon "XYZ-Dragon Cannon".
"De-Fusion" may target "XYZ Dragon Cannon". "XYZ-Dragon Cannon" will be returned to the Fusion Deck, but no monsters will be Special Summoned.
Q: If "X-Head Cannon" and "Z-Metal Tank" are on the field and "Y-Dragon Head" is equipped to "X-Head Cannon" through its effect, can the three cards be removed from play to Special Summon the "XYZ-Dragon Cannon"? A: They would need to be monsters at the time you would remove them from play to Special Summon the associated XYZ Fusion monster. Curtis Schultz, 01/29/2004
Q: If "X-Head Cannon", "Y-Dragon Head", and "Z-Metal Tank" are used to attack the opponent, can they be removed from play to Special Summon "XYZ-Dragon Cannon" during the Battle Phase to attack the opponent once again? A: You cannot perform the Special Summon of "XYZ Dragon Cannon" (per its instructions) during your Battle Phase. The XZ, XY, YZ, and XYZ can only be Special Summoned by the method written on each respective monster during Main Phase 1 and 2 of your turn only. Curtis Schultz, 02/24/2004
Q: On the FAQ page for Dimension Fusion, it says that XYZ Dragon Cannon can be Special Summoned by the effect of Dimension Fusion. However, XYZ, XZ, XY, and YZ can only be Special Summoned by removing the respective parts from the game and the FAQ states that there is no "proper" way of special summoning these Fusions. So how can Dimension Fusion special summon them if they're never "properly" Special Summoned to begin with? A: We had the same question. But it's on the official roster of rulings so it stays. Perhaps at some point in the future there will be a way to "properly" summon XYZ monsters. Who knows. Kevin Tewart, 01/26/2005
Edison Format · March 2010
What the Edison Format rulings add to, or change from, the rulings above.
XYZ FUSION MONSTERS: The following rules apply to "XYZ-Dragon Cannon", "YZ-Tank Dragon", "XY-Dragon Cannon", and "XZ-Tank Cannon".
So they cannot be Special Summoned by the effect of "Magical Scientist" or "Summoner of Illusions". They cannot be Special Summoned from the GY even after they have been Special Summoned by the method described in their texts.
You must remove from play the monsters specified; you cannot use "Goddess with the Third Eye", etc., because you are not performing a Fusion Summon.
You CAN remove a face-down "X-Head Cannon", etc., from play to Special Summon one of these monsters from the Extra Deck.
The Special Summoning of these monsters from the Extra Deck has no Spell Speed and cannot be chained to (but can be negated with "Solemn Judgment").