Rulings for Dimension Fortress WeaponYu-gi-oh! Card
Cards cannot be sent from the Deck to the Graveyard.
Costs cannot be paid while "Dimension Fortress Weapon" is on the field, if the cost is to send cards from the Deck to the Graveyard. So "Card Trooper" and "Celestia, Lightsworn Angel" cannot activate their effects.
In general, Lightsworn monsters can activate their effects while "Dimension Fortress Weapon" is on the field, but cards are not sent from the Deck to the Graveyard afterwards.
If "Ryko, Lightsworn Hunter" is flipped face-up while "Dimension Fortress Weapon" is on the field, you can destroy 1 card with its effect, but no cards are sent from the Deck to the Graveyard after that.
"Solar Recharge" cannot be activated while "Dimension Fortress Weapon" is on the field. If "Solar Recharge" is activated and "Dimension Fortress Weapon" is Summoned in a chain, draw 2 cards, but do not send 2 cards from the Deck to the Graveyard after that.
If a card needs to be sent from the Deck to the Graveyard because of a card combination that renders the usual resolution impossible, that card is still sent to the Graveyard even if "Dimension Fortress Weapon" is on the field.
Example #1: If "Dimension Fortress Weapon" is on the field and you activate "Conscription", and pick up a monster that could be Normal Summoned, but your Monster Card Zones are full, the monster is sent to the Graveyard.
Example #2: The same is true for extra monsters from "Enchanting Fitting Room" that cannot be Summoned due to lack of available Monster Card Zones.
Example #3: "Crystal Seer" is flipped face-up while "Thunder King Rai-Oh" is on the field.
"Reasoning" and "Monster Gate" cannot be activated while "Dimension Fortress Weapon" is on the field. If their effects were activated and "Dimension Fortress Weapon" was Summoned in a chain, their effects are not applied.
"Null and Void" cannot be activated while "Dimension Fortress Weapon" is on the field. If "Null and Void" is activated, and "Dimension Fortress Weapon" is Summoned in a chain, add the drawn cards to the hand after both players see them.
"Destiny Hero Diamond Dude" cannot activate its effect while "Dimension Fortress Weapon" is on the field. If its effect is activated and "Dimension Fortress Weapon" is Summoned in a chain, the effect is not applied (do not check the top card of the Deck).
"Future Fusion" cannot be activated while "Dimension Fortress Weapon" is on the field. If "Future Fusion" is activated, and "Dimension Fortress Weapon" is Summoned in a chain, the effect of "Future Fusion" is not applied, no monsters are sent to the Graveyard, no Fusion Monster is Special Summoned, and "Future Fusion" remains on the field meaninglessly.
If "Magical Merchant" is flipped face-up while "Dimension Fortress Weapon" is on the field, its effect is not applied.
If "Chain Destruction" is activated while "Dimension Fortress Weapon" is on the field, copies of the monster in the player's hand are destroyed, but not copies in their Deck.
If "Spell Vanishing" is activated while "Dimension Fortress Weapon" is on the field, check the opponent's hand and Deck, and send copies of the Spell Card in their hand to the Graveyard, but not the copies from their Deck.
