Host Hat

### Collection Grid

*(page 4, column 10, row 1)**(page 4, column 10, row 1)**(page 4, column 11, row 1)*

**Host Hat** is a passive item added in *The Binding of Isaac: Afterbirth*.

## Effects

* Enemy shots that hit Isaac have a 25% chance to be blocked. When a projectile is effectively blocked, Host Hat fires 3 bullets similar to the Host's.
	+ Bullets fired from Host Hat use Isaac's Damage and Range, and copy Isaac's Tear effects.
		- The bullets do not use Isaac's Shot Speed.
	+ Can block:
		- Fireballs (e.g. from  Crackle), but their lines of fire harm Isaac.
		- Fire projectiles (e.g. from Mega Satan).
		- Obstacles thrown by  Polty or  Kineti.
	+ Does not block:
		- Explosive projectiles (e.g. from Gurgle).
		- Lasers or beams.
		- Lines of fire from fireballs.
		- Projectiles from  Big Bony,  Coal Boy,  Danny.
* Grants immunity to explosions.
* Grants immunity to bullets falling from above.

## Notes

* Does not protect against exploding mushrooms.
* Does not protect against Hush's vertical beams in the final phase.
* Isaac becomes immune to Mom and Satan's stomp attacks, as they are considered explosions. This makes the item very valuable if trying to unlock  The Forgotten, as it will protect Isaac from the effects of the .
* This item is invaluable in Greedier Mode as nearly all of Ultra Greedier's attacks are considered explosions.
* One of only two items that grant full immunity to explosive damage, the other being .
* Although Host Hat has firing animation that expose itself after it blocks a tear, it can still block tears in this state, firing bullets as much it blocks.

## Synergies

* /  / : Isaac becomes immune to his explosives.
* : Walnut will only require 1-5 explosions to open. As Isaac is immune to explosions, he can safely open Walnut without taking any damage.

## Interactions

* The following items that change the property of Isaac's tears affect Host Hat's bullets:
* The following items that modify Isaac's tears do not affect Host Hat's bullets, aside from stat changes (if present):
* /  Keeper and other multi-shot effects: Do not add Host Hat's bullets.
* / : Does not affect Host Hat's bullets, aside from stat changes.
* : Cone Head's chance of blocking effect is applied first. Tears blocked by Cone Head do not cause Host Hat to fire.
	+ This leaves Isaac 40% chance to negate tears in any way.
* : Host Hat's bullets grant the damage multiplier, but do not reset it even when they miss.
* / : Host Hat's bullets are not counted for shots fired.
* : Tears can be reflected while Isaac is invulnerable.
* : Host Hat's chance of blocking effect is applied first.
	+ This leaves Isaac 60% chance to negate tears in any way.
* **Host Hat**: Additional copies of this item, such as from  / , have no effect.
* : Infamy's chance of blocking effect is applied first. Tears blocked by Infamy do not cause Host Hat to fire.
	+ This leaves Isaac 62.5% chance to negate tears in any way.
* : Tears can be reflected when hitting the heart, not Isaac.
* / : Host Hat's chance of blocking projectiles is applied before the shield, allowing it to be saved.
* : Host Hat's chace of reflecting effect is applied first. Tears blocked by Host Hat are not reflected by Metal Plate.
	+ This leaves Isaac 43.75% chance to negate tears in any way.

## Trivia

* Prior to *Repentance*, Host Hat's description was "Nice hat!"