One Way Opening is a Legends of Idleon monster: 12 drops.

One Way Opening | Idleon Toolbox

One_Way_Opening

One_Way_Opening_Card

Increases Base Damage Dealt to all monsters by 400. Golden foods are never consumed.

Golden_Nomwich

Increases Move Spd by 10%. 1% chance to be consumed every 10 meters walked. Must be equipped in a Food Slot to give its bonus.

Small_Speed_Potion

Hold down on this item to turn 10 Fragments into 1 Talent Point Reset Potion. You'll need 1 open inventory space for this to work.

Talent_Point_Reset_Fragment

Hold down to add a Silver Pen to your Post-Office! You can use it to skip a Delivery!

Silver_Pen

Book_Stamp

High_IQ_Lumber_Stamp

Drag onto any Armor to apply. Success Chance; 100% Uses up 1 slots only if Successful

Armor_Upgrade_Stone_I

Drag onto any Tool to apply. Success Chance; 100% Uses up 1 slots only if Successful

Tool_Upgrade_Stone_I

Drag onto any Equip to apply. Success Chance; 100% Uses up 1 slots only if Successful. WARNING:Mystery Stat has a chance to be Negative, and reduce stats!

	Name	Qty	Rate	Chance
Base drops
	One Way Opening Card		1 in 200,000	0.000500%
Rare Drop DropTable4
	Armor Upgrade Stone I
	Tool Upgrade Stone I
	High IQ Lumber Stamp
	Small Speed Potion	5
	Book Stamp
Mega-Rare SuperDropTable1
	Lucky Lad
	Silver Pen
	Special Talent BookRoll Da Dice Lv 100
	Talent Point Reset Fragment
	Special Talent BookAttacks On Simmer Lv 50
	Golden Nomwich
	Mystery Upgrade Stone I	2

Wiki

One Way Opening

Drops

Changes