• Please copy/paste the error message you see on your screen, if applicable.

When declaring an attack with Dark King Snake Pendocles (which had 3 cores) and resolving its "When this spirit attacks" that allows to remove one core from a spirit your opponent controls. In this instance i intended to remove a core from an Arcana Prince Overo with one core on it.

• Please explain what you wanted to do, what you did and what happened

The messages of "Error GS4" and "Your interface is unstable" popped when i tried to select a core from Arcana Prince Overo, not allowing the action to happen.

• Which browser are you using?

• Please copy/paste the text displayed in English instead of your language. If you have a screenshot of this bug (good practice), you can use Imgur.com to upload it and copy/paste the link here.

When declaring an attack with Dark King Snake Pendocles (which had 3 cores) and resolving its "When this spirit attacks" that allows to remove one core from a spirit your opponent controls. In this instance i intended to remove a core from an Arcana Prince Overo with one core on it.

• Is this text available in the translation system? If yes, has it been translated for more than 24 hours?

The messages of "Error GS4" and "Your interface is unstable" popped when i tried to select a core from Arcana Prince Overo, not allowing the action to happen.

• Which browser are you using?

• Please explain your suggestion precisely and concisely so that it's as easy as possible to understand what you mean.

When declaring an attack with Dark King Snake Pendocles (which had 3 cores) and resolving its "When this spirit attacks" that allows to remove one core from a spirit your opponent controls. In this instance i intended to remove a core from an Arcana Prince Overo with one core on it.

• Which browser are you using?

• What was displayed on the screen when you were blocked (Blank screen? Part of the game interface? Error message?)

When declaring an attack with Dark King Snake Pendocles (which had 3 cores) and resolving its "When this spirit attacks" that allows to remove one core from a spirit your opponent controls. In this instance i intended to remove a core from an Arcana Prince Overo with one core on it.

• Which browser are you using?

• Which part of the rules was not followed by the BGA adaptation?

When declaring an attack with Dark King Snake Pendocles (which had 3 cores) and resolving its "When this spirit attacks" that allows to remove one core from a spirit your opponent controls. In this instance i intended to remove a core from an Arcana Prince Overo with one core on it.

• Is the rules violation visible on game replay? If yes, at which move number?

The messages of "Error GS4" and "Your interface is unstable" popped when i tried to select a core from Arcana Prince Overo, not allowing the action to happen.

• Which browser are you using?

• What was the game action you wanted to do?

When declaring an attack with Dark King Snake Pendocles (which had 3 cores) and resolving its "When this spirit attacks" that allows to remove one core from a spirit your opponent controls. In this instance i intended to remove a core from an Arcana Prince Overo with one core on it.

• What did you try to do to trigger this game action?

The messages of "Error GS4" and "Your interface is unstable" popped when i tried to select a core from Arcana Prince Overo, not allowing the action to happen.

• What happened when you tried to do this (error message, game status bar message, ...)?

• Which browser are you using?

• At which step of the game did the problem occur? What was the current game instruction?

When declaring an attack with Dark King Snake Pendocles (which had 3 cores) and resolving its "When this spirit attacks" that allows to remove one core from a spirit your opponent controls. In this instance i intended to remove a core from an Arcana Prince Overo with one core on it.

• What happened when you tried to do this game action (error message, game status bar message, ...)?

The messages of "Error GS4" and "Your interface is unstable" popped when i tried to select a core from Arcana Prince Overo, not allowing the action to happen.

• Which browser are you using?

• Please describe the display issue. If you have a screenshot of this bug (good practice), you can use Imgur.com to upload it and copy/paste the link here.

When declaring an attack with Dark King Snake Pendocles (which had 3 cores) and resolving its "When this spirit attacks" that allows to remove one core from a spirit your opponent controls. In this instance i intended to remove a core from an Arcana Prince Overo with one core on it.

• Which browser are you using?

• Please copy/paste the text displayed in English instead of your language. If you have a screenshot of this bug (good practice), you can use Imgur.com to upload it and copy/paste the link here.

When declaring an attack with Dark King Snake Pendocles (which had 3 cores) and resolving its "When this spirit attacks" that allows to remove one core from a spirit your opponent controls. In this instance i intended to remove a core from an Arcana Prince Overo with one core on it.

• Is this text available in the translation system? If yes, has it been translated for more than 24 hours?

The messages of "Error GS4" and "Your interface is unstable" popped when i tried to select a core from Arcana Prince Overo, not allowing the action to happen.

• Which browser are you using?

• Please explain your suggestion precisely and concisely so that it's as easy as possible to understand what you mean.

When declaring an attack with Dark King Snake Pendocles (which had 3 cores) and resolving its "When this spirit attacks" that allows to remove one core from a spirit your opponent controls. In this instance i intended to remove a core from an Arcana Prince Overo with one core on it.

• Which browser are you using?