Card Rulings:Artifact Caduceus

OCG Rulings

 * The "During your opponent's turn, when an "Artifact" monster is Special Summoned" effect is a Trigger Effect. (This is a mandatory effect. It will activate even during the Damage Step.)


 * The "During your opponent's turn, when an "Artifact" monster is Special Summoned" effect does not target.


 * During your opponent's turn, if you activate "Call of the Haunted" targeting 1 "Artifact Moralltach" in your Graveyard and then activate "Celestial Transformation" in a chain to Special Summon "Artifact Aegis" from the hand, since "Artifact" monsters are Special Summoned by the effects of "Call of the Haunted" and "Celestial Transformation", the "During your opponent's turn, when an "Artifact" monster is Special Summoned: Draw 1 card." effect activates because each of these effects. Since the effect of "Artifact Caduceus" activates twice, you will draw 2 cards.


 * If during your opponent's turn "Artifact Caduceus" and "Artifact Beagalltach" are Special Summoned simultaneously by the effect of "Return from the Different Dimension", the "During your opponent's turn, when an "Artifact" monster is Special Summoned: Draw 1 card." effect does not activate.