Prank Items

Invisibility Potion

Drink to earn mischief and become invisible. Being stunned removes the effect early.

Item properties

Score multiplier
Mischief uses the current score multiplier: ×1 to ×2.5 as teammates are caught.
Spawn chance during class
During-class drawer rolls scale the item from ×0.35 when students are ahead on mischief to ×3 when they are behind, with a further player-count factor from ×1.8 for 1 student to ×0.75 for 7. After receiving a trick item, that player is excluded from trick-item draws for 3–12 seconds if another kind is available.
Item Spawn Chance
The item-specific room slider ranges from 0% to 400%. At 0%, this item cannot spawn.

Item acquisition
Classroom	Method	Conditions and details
Schoolyard	Vending machine and ice box	Vending machine 1.5% per use; ice box refill 1.5% per refilled slot.
Classroom	Desk drawer	Desk drawer refill 1.2% per refilled slot.
Blackout Night Classroom	Desk drawer	Desk drawer refill 1.2% per refilled slot.
Lecture Hall	Desk drawer	Desk drawer refill 1.2% per refilled slot.
Computer Room	Computer game reward	Computer game rewards 6.7% per reward.
Restroom	Stall drawer	Stall drawer refill 1.2% per refilled draw.
Hot Pot Classroom	Desk drawer	Desk drawer refill 1.2% per refilled slot.
Dormitory	Bed drawer	Bed drawer refill 1.2% per refilled draw.
Buffet Cafeteria	Desk drawer and conveyor belt	Desk drawer and conveyor belt refill 1.2% per refilled slot.
Exam Classroom	Desk drawer	Desk drawer refill 1.2% per refilled slot.