Cold Storage
The printed wording of the second ability's effect says "Put all creature cards on Cold Storage into play." Taking that at face value, the player who activates that ability does all the putting, meaning that player controls all the returned permanents. But an old ruling says that's not the case; each card is returned under its owner's control. Since that's not inferable from the card, that ruling is being reversed, and Cold Storage will now specify that the ability's controller gets all the permanents.
New wording;
: Exile target creature you control.
Sacrifice Cold Storage: Return each creature card exiled with Cold Storage to the battlefield under your control.