Card Rulings:Magic Cylinder


 * The effect of "Magic Cylinder" negates the attack of one attacking monster, but that monster is still considered to have attacked, and may not attack again, or have its Battle Position manually changed.


 * Monsters that may attack twice during the Battle Phase, such as "Cyber Twin Dragon", that have their first attack negated by the effect of "Magic Cylinder" may still make a second attack.


 * If the attack of "Indomitable Fighter Lei Lei", "Goblin Attack Force", "Goblin Elite Attack Force" or "Spear Dragon" is negated by the effect of "Magic Cylinder", they will not be changed to Defense Position, since Damage Calculation never occurred.


 * The Damage caused by this card’s effect is equal to the current ATK of the attacking monster.


 * If an effect is chained to "Magic Cylinder" that destroys the attacking monster, or removes the attacking monster from the turn player’s side of the field (including switching it to your control, or sending it to the owner’s hand), no damage is dealt by the effect of "Magic Cylinder".

Mentions in Other Rulings

 * Amazoness Archers: If you activate Amazoness Archers and chain Magic Cylinder, Magic Cylinder does the full damage before the -500 ATK is applied; your opponent's other monsters must attack normally. If you chain Amazoness Archers to Magic Cylinder, the ATK is reduced first and then Magic Cylinder does damage.


 * Asura Priest: If Asura Priest attacks a monster and your opponent activates Magic Cylinder to negate the attack, Asura Priest can attack that same monster again.


 * Barrel Behind the Door: You can activate Barrel Behind the Door against Magic Cylinder. The attack will be negated and the damage transferred to the opponent.


 * Black Luster Soldier - Envoy of the Beginning: If Black Luster Soldier - Envoy of the Beginning attacks, and its attack is negated by Magic Cylinder...you cannot activate his first effect during Main Phase 2.


 * Book of Moon: If you chain Book of Moon to Magic Cylinder...to flip the target of any of those cards face-down, the card's effect disappears. (See "Activation & Targeting Eligibility" in the Advanced FAQ.)


 * Chaos Sorcerer: If Chaos Sorcerer attacks and the attack is negated with Magic Cylinder, Chaos Sorcerer cannot activate its effect in Main Phase 2.


 * Diffusion Wave-Motion: If your Level 7 Spellcaster-Type monster selected with Diffusion Wave-Motion has 1 of its attacks negated by Magic Cylinder, that attack is negated but your Level 7 Spellcaster-Type monster still attacks everything else.


 * Getsu Fuhma: If an attack is negated by Magic Cylinder...then Getsu Fuhma's effect does not activate.


 * Gravekeeper's Assailant: You make the change of battle position due to Gravekeeper's Assailant at the beginning of the attack, so you can change the battle position even if the attack is then negated by Magic Cylinder...


 * Metalsilver Armor: If you attack with Dark Magician, and you control another monster equipped with Metalsilver Armor, your opponent cannot activate Magic Cylinder because Magic Cylinder targets and only the monster equipped with Metalsilver Armor can be targeted (and it is not attacking).


 * Ordeal of a Traveler: When you activate Ordeal of a Traveler's effect as a chain to Magic Cylinder, since Ordeal of a Traveler resolves first, if your opponent guesses incorrectly then the attack does not resolve and the effect of Magic Cylinder disappears. If multiple copies of Ordeal of a Traveler are active, their effects are cumulative.


 * Ring of Destruction: If you chain Ring of Destruction to Magic Cylinder, Magic Cylinder's effect disappears because the monster is no longer there (so Magic Cylinder inflicts no damage).


 * Spirit Reaper: When Spirit Reaper is targeted by an effect, Spirit Reaper is destroyed by its own effect AFTER resolving the effect that targeted it. For example, if Spirit Reaper attacks and Magic Cylinder is activated, designating Spirit Reaper, first Magic Cylinder will resolve, negate the attack, and inflict 300 damage to the controller of "Spirit Reaper. Then, after that, Spirit Reaper is destroyed by its effect.


 * The Unhappy Girl: If your opponent attacks your The Unhappy Girl and you use Magic Cylinder to negate the attack, then The Unhappy Girl's effect is not applied.


 * Twin Swords of Flashing Light - Tryce: If the first attack of a monster equipped with Twin Swords of Flashing Light - Tryce is negated by Magic Cylinder, the monster can still perform the second attack.