Card Rulings:Naturia Spiderfang

"Naturia Spiderfang":

OCG Rulings

If the only Spell/Trap Card activated during the turn was negated by a card like "Light and Darkness Dragon", then "Naturia Spiderfang" cannot attack.^[1]

"Naturia Spiderfang" can attack during a turn in which your opponent activates the effect of a Continuous Spell/Trap Card that is already face-up.^[2]

"Naturia Spiderfang" can attack if its effect is being negated by "Skill Drain", regardless of whether or not the opponent activated the effect of a Spell/Trap/Effect Monster Card during this turn.^[3]

If your opponent activates the effect of a Spell/Trap/Effect Monster Card and afterwards you Summon "Naturia Spiderfang", then "Naturia Spiderfang" can attack.^[4]

↑ Konami FAQ: Can "Naturia Spiderfang" attack during a turn in which the activation of a Spell/Trap Card was negated?
↑ Konami FAQ: Can "Naturia Spiderfang" attack when your opponent activates the effect of a Continuous Spell Card or Continuous Trap Card?
↑ Konami FAQ: When "Skill Drain" has been activated, can "Naturia Spiderfang" attack even when the opponent has not activated a card?
↑ Konami FAQ: If your opponent activates a card before "Naturia Spiderfang" was Summoned, can it attack?