Can’t access parental control email address

Only those limited to one turn.

Mind Control and Mind Control Tech both take control of a Minion permanently. This is regarded by the game's rules engine as that Minion newly joining your army and thus follows the same attacking restrictions as a Minion you summon or play from you hand. That means, unless it has Charge, it can't attack that turn.

Shadow Madness takes control of a Minion for one turn only. This would simply not do much if the Minion didn't receive Charge implicitly. Actually, there has been quite a discussion about the decision not to write it on the card (supposedly to keep it simple), but it seems Shadow Madness is intended (and probably handled internally) to give Charge to the Minion.

From a logical point of view, this exception makes sense because the card would do very little without that mechanic (notably, it would work the same way it does now with Charge Minions, and might get a dangerous Taunt Minion out of the way). Seeing as this could theoretically be intentional behaviour, though, we could well see the card reworded in the future if and when cards are released that do exactly this. For the time being, it's safe to assume that cards which take control of a Minion only for one turn give that Minion Charge implicitly.

There are a few pieces of exclusive content thusfar in Hearthstone. The first is a golden 'Gelbin Mekkatorque' card, that could be earned by using real money to make a purchase in Hearthstone while it was in the beta.

The golden version of this card is no longer obtainable. It was previously obtained by spending real money in the store during the game's beta test, prior to the full release of the game.

In addition, golden 'Elite Tauren Chieftain' was only earnable through purchasing a ticket to Blizzcon 2013, and thus also can't be earned any longer.

However, the normal version of each of these cards are still both able to be earned through crafting them.

Card backs will likely be exclusive to each season and event, such as the ones earned through levels in ranked on specific seasons, but thusfar, I haven't seen anything specific about this yet.