This card can be activated when EITHER player has 6 cards or more combined in hand and on the field.
All selected cards on both players’ side of the field are sent to their respective Graveyards simultaneously.
Monster Tokens count towards these 6 cards, and can be selected by this card’s effect (but they will be taken off the field instead of being sent to the Graveyard.
If “Premature Burial” is equipped to a monster on the field, you can select “Premature Burial” to be sent to the Graveyard and the previously equipped monster will remain on the field, since “Premature Burial” was not destroyed.
If you select “Toon World” to be sent to the Graveyard, your Toon Monsters are not destroyed because “Toon World” was not destroyed.
If you send “Call of the Haunted” to the Graveyard, the monster Special Summoned by its effect is destroyed.
If “Witch of the Black Forest” or “Sangan” is sent to the Graveyard, their effects do activate.
Netrep Rulings:
Cards sent to the Graveyard as a result of the effect of “Bubble Crash” are not destroyed.
“Bubble Crash” may not send itself to the Graveyard as a result of the effect of “Bubble Crash.”
Cards sent to the Graveyard as a result of the effect of “Bubble Crash” are all sent at the same time.
Tokens count towards the number of cards on the field for the purpose of “Bubble Crash.”