Card Rulings:Number 23: Lancelot, Dark Knight of the Underworld

OCG Rulings

 * "While this card has Xyz Material, it can attack your opponent directly." effect is a Continuous Effect.


 * " When this card inflicts battle damage to your opponent: You can target 1 face-up monster your opponent controls; destroy that target." effect is a Trigger Effect. (This effect targets. It is activated after damage calculation.)


 * "Once per turn, during either player's turn, when a Spell/Trap Card or another monster effect is activated: Detach 1 Xyz Material from this card; negate the activation." effect is a mandatory Quick Effect. (This effect also activates during the Damage Step. Detaching 1 Xyz Material from this card is a cost to activate this effect.)