Domain of Dark Ruler [5D-manga]

Trap-Spell Card :

Effect:
Activate only when your opponent activates a Spell or Trap Card. Negate the activation and the effects of that card, and of any Spell or Trap Card that is activated while this card is face-up on the field
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Should this be made real ?

http://yugioh.wikia.com/wiki/Trap-Spell_Card

I don't understand the benefits of being treated as both a Trap and Spell card. Of course I never read Yu-Gi-Oh! R so can someone explain that to me?

Anyway this card is broken. Instant Spell/Trap lock. No it should not and will not be made real.

Wouldn't it just be the equivalent of a Quickplay Spell, though? It is broken and would need to be nerfed.