Several Killer Bunnies games – including QUEST and CONQUEST – use a Pink Rectangular Box with a Pink Circle icon.
All cards that have a Pink rectangular box on the left border of the card are considered to be Aggressive cards with the exception of Choose A Carrot (any amount of Carrots) cards. To play an Aggressive card, you must have a bunny in The Bunny Circle.
All cards that have a Pink rectangular box with a Pink circle are also considered to be Aggressive cards and players must still have a bunny in The Bunny Circle to play these cards. This icon will appear only on Special cards. If a player wishes to save (and keep) these Special cards then he must have (and maintain) a bunny in The Bunny Circle. If at any time the player does not have a bunny in The Bunny Circle, then the card is immediately discarded.