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

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 explains what you wanted to do, what you do 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.

• What is your browser?

• 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 a picture hosting service of your choice (snipboard.io for example) to upload it and copy/paste the link here. Is this text available in the translation system? If yes, has it been translated for more than 24 hours?

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 is your browser?

• 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.

• What is your browser?

• 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.

• What is your browser?

• Which part of the rules was not respected 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.

• What is your browser?

• Which 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 do 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 try to do this (error message, game status bar message, ...)?

• What is your browser?

• At which step of the game did the problem occurs (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 try to do a 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.

• What is your browser?

• Please describe the display issue. If you have a screenshot of this bug (good practice), you can use a picture hosting service of your choice (snipboard.io for example) 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.

• What is your browser?

• 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 a picture hosting service of your choice (snipboard.io for example) to upload it and copy/paste the link here. Is this text available in the translation system? If yes, has it been translated for more than 24 hours?

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 is your browser?

• 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.

• What is your browser?