Laplace's Demon
- Set
- BT12
Effect
Main Until the end of your opponent's turn, 1 of your opponent's Digimon gains "Start of Your Main Phase This Digimon attacks."
Security Effect
Security Add this card to its owner's hand.
Track this card
Record how many copies of BT12-107 you own and DigiFoundry shows which are in decks, which are up for trade and which are actually available.
Rulings for Laplace's Demon
Official clarifications published for this card.
What happens if there are multiple "[Start of Your Main Phase] This Digimon attacks" effects and they trigger simultaneously?May. 8, 2026 Updated
You activate the 1st effect from among the simultaneously triggered effects and attack. The 2nd effect can be activated before the counter timing, but because you can't declare another attack during an attack, you won't be able to attack using the 2nd effect, even if you activate it.
28 March 2024
What happens if this card's effect is activated on an opponent's Digimon with an "[Opponent's Turn] This Digimon isn't affected by your opponent's effects" effect?
You can still choose a "this Digimon isn't affected by your opponent's effects" Digimon as a target for the effect. As soon as it becomes your opponent's turn, that opposing Digimon loses the "this Digimon isn't affected by your opponent's effects" effect and is affected by this card's effect. As a result, the attack occurs at the start of the main phase.
28 March 2024
Can I choose an opponent's Digimon with a "can't attack" effect as the target when I activate this card's [Main] effect?
Yes, you can. However, in such cases the "can't attack" effect prevents making the attack.
28 March 2024
