[quote=@Xeiyenreisha]
[@Scarifar] Light and Darkness Dragon, do you remember what pack that is? It's a card I used against Lightsworn and annoying effect cards to strip them of using their effects. It does wonders for annoying cards like Lightsworn Sanctuary and Realm of Light since Shine Counters are just wasted when you try to use them while it is on the field. Double-edged sword card but it has a great effect after it is destroyed. I always kept it around until it was destroyed. Easily one of my favorite dragon cards despite the -500 ATK for each time the effect on it is activated.

[/quote]

Okay, time to put on my lawyer glasses and clear up some rulings.

Light and Darkness Dragon only negates the activation of the Spell and Trap cards themselves. If a Spell or Trap that is already face-up on the field activates its effect, LADD cannot negate that activation, as it was the activation of the effect, and not the Spell or Trap card itself. It's perfect legal to negate Lightsworn monster effects though, although due to the rapid-fire nature of their milling effects, that ATK will be dropping awfully quickly.