Forum:TCG only cards, and OCG only cards

In duelingnetwork.com they say that you cannot have OCG only cards in your deck if it is a TCG hosted match, and you cannot have a TCG only cards in your deck in a OCG hosted match. Which one of this card bellow is OCG only.

Obelisk The Tormentor, Slifer the Sky Dragon, Wing Dragon of Ra, and Creator God of Light, Horakhty.

When I check the forum here about this, they are listed in TCG/OCG. And you can't tell if it is OCG only, if they are no TCG version of it, when I select card to make a deck in duellingnetwork.com96.44.92.186 (talk) 14:51, May 12, 2013 (UTC)