Forum:This card VS "Card Name"

My question is simple. On some cards the term "You can only use this card's effect once per turn" is used while on other cards, "You can only use "Name of card" effect once per turn".

I believe that this is defined as the following:
 * If "You can only use this card's effect once per turn", then player can only use that one card's effect once per turn. If the card is flipped down then back up, player can use effect again. If card is removed from field, and then returned to field, player can use effect again. Any number of the same cards can activate their effects "once per turn" each. IE: two Valhalla, Hall of the Fallen on field, one uses effect, Bottomless Trap Hole, second Valhalla, Hall of the Fallen can activate effect.


 * If "You can only use "Name of card" effect once per turn", then player can only activate ONE of "card name"'s effect. If card is flipped down then flipped up, can NOT use effect. If card is removed then replaced, can NOT use effect. If card's name is changed by another card, (ie: Hero Mask) then can activate multiple times because card's name doesn't match effect. ("You can only use "Name of card" effect once per turn").
 * If this is true, Fairy Archer's effect can be activated multiple times in a turn if it's name gets changed. If this is true, Fairy Archer should be errataed.

Please tell me what the official ruling is. --LordGeovanni 09:09, February 24, 2010 (UTC)