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Template:Infobox passive collectible

Template:Cit

## Effects

* Randomizes passive items and attributes on pickup and at the start of every floor.
	+ Stats gain a random modifier. These modifiers do not stack between levels and are instead rerolled every time.
		- Speed -0.2, 0 or +0.2.
			* Template:Dlc Also affects maximum speed, may never exceed 2.0.
		- Template:Dlc Range -0.5, 0 or +0.5.
		- Template:Dlc Range -2.5, 0 or +2.5.
		- Template:Dlc Tears -0.5, 0 or +0.5.
		- Template:Dlc Fire rate -0.5, 0 or +0.5.
		- Shot speed -0.2, 0 or +0.2.
		- Damage flat -1, 0 or +1.
		- Luck -1, 0 or +1.
	+ Does not affect trinkets, cards, pills, Pretty Flies, Template:I / Template:I, Template:I / Template:I, Template:I / Template:I, or active items.

## Notes

* See Template:I for more details of the rerolling process.
* Like other full-reroll effects, Missing No. has a small chance to not reroll every item.
* Template:Dlc Can cause transformations.
	+ Template:Dlc Transformations are lost when rerolling out of the items that caused them.
* Missing No. cannot be re-rolled or removed by most means after being picked up, including Template:I, Template:I, Template:P, or taking damage as Template:C.

## Synergies

* {{Butter!}} / Template:I: Provide the only available methods for getting rid of Missing No.

## Interactions

* Template:I : When getting the Stairway at the start of a floor, the ladder doesn't spawn. It will spawn at the start of the next floor even if rerolled

## Strategy

* There is no real strategy to Missing No. as it randomizes all the player's items. The benefit of the randomization can be added by collecting more items to increase the chance of a good item synergy.
* However, this item can be used to gain more health if desperately needed, as the randomization does often include items that grant you various types of hearts.
* If the player has already obtained a large number of items (such as during a run where they have gained infinite money in greed mode), it is highly recommended to avoid this item, as it will almost always end up rerolling all the items the player has thus far collected into Template:I.
* Due to losing all items every level, it is beneficial to try to gain permanent stat boosts if possible. These include using pills when equipped with Template:I or Template:I, sacrificing health with Template:I to gain damage or Template:I to gain tears, or using up Template:I.

## Trivia

* 此物品引用了初代宝可梦游戏中臭名昭著的Missing No.。 The glitch would often corrupt save files, and therefore randomize various parts of the game as it would use the incomplete index values attributed to entities not included in the final release of the game. Isaac's appearance when affected by Missing No. is based on this glitch which could cause the player's sprite to become scrambled.
* The item also resembles the painting "Composition II with Red, Blue, and Yellow" by Dutch painter Piet Mondrian.
* The background color for the Missing No. achievement has the same color as all the challenge unlocks. This implies that Missing No. was originally intended to be unlocked via a challenge. (Or, perhaps, it was intended to be looked at as an error.)
	+ The background color for the Template:A achievement has the same color as all the boss rush unlocks. This implies that potentially Template:C would have unlocked Template:P for completing the Template:R and Template:Chal would have unlocked Missing No.

## Seeds

Template:PlatTemplate:Plat FTTQ E3RZ (Secret Room directly to the right of the starting room)
Template:Plat X1F3 19X9 (First floor Secret Room to the left of the Shop)
Template:Plat 2QDT ALD2 (First floor Secret Room to the bottom of the Treasure Room)
Template:Plat W4Q7 JMMP (First floor Secret Room directly under the Treasure Room)

## Bugs

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