Sprinkler 
Effects
- Upon use, creates a stationary sprinkler that rotates and fires tears in 8 directions. The tears copy Isaac's stats and most tear effects.
Notes
- Sprinkler's rate of fire and rotation speed depends on Isaac's tears stat.
- Sprinkler does not do contact damage.
- It is counted as an obstacle and will block some enemies movement, e.g: (Chub) Chub.
Synergies
20/20 /
The Inner Eye /
Mutant Spider: The sprinkler fires multiple tears simultaneously.
Anti-Gravity: Sprinkler tears are affected only while Isaac is firing, and are released at the same time Isaac releases the fire button.
- (Baby-Bender) Baby-Bender: The sprinkler will shoot homing tears.
Blood Clot /
Chemical Peel: The sprinkler will fire either normal tears or tears with the items' effects depending on which tear Isaac fired last.
- (Added in Repentance)
Book of Virtues: Spawns wisps on the middle ring, similar in appearance to Sprinkler. The wisps fire 3 times faster than the average wisp. The wisps fire tears in a spiral pattern, similarly to Sprinkler itself.
Brimstone: The sprinkler fires somewhat short-ranged Brimstone lasers instead of tears.
Car Battery: Spawns two sprinklers on top of each other.
- (Removed in Repentance)
Chocolate Milk: The size and damage of the sprinkler's tears depend on Isaac's current charge amount.
Dead Eye: Sprinklers increase the damage multiplier when hitting an enemy, and do not reduce it when they miss.
Kidney Stone: Sprinklers will fire a barrage of tears whenever Isaac does, but will not fire the stone.
- (Removed in Repentance)
Lead Pencil: Sprinkler tears count for activation of the Lead Pencil effect. The tear burst may fire from the sprinkler or Isaac.
Loki's Horns: The sprinkler has four eyes and simultaneously fires tears in four directions.
Mom's Eye: The sprinkler has two eyes and simultaneously fires tears forwards and backward.
Mom's Knife: The sprinkler fires knives instead of tears. The knives fire straight outwards, deal (Removed in Repentance) double / (Added in Repentance) 1.5x Isaac's tear damage and do not return.
- (Added in Repentance) Mom's Knife +
BFFS! The knives deal double Isaac's tear damage.
Monstro's Lung: The sprinkler fires disorganized clusters of tears.
Tech X: The sprinkler fires laser rings that are smaller than the central spark and have a correspondingly small hit area, which deal 100% of Isaac's damage.
Technology: The sprinkler fires lasers instead of tears.
Tiny Planet: Tears will travel toward and orbit Isaac, wherever he is in the room.
- (Removed in Repentance)
Tractor Beam: The sprinkler's tears will not fire from the sprinkler itself, and will simply appear within the beam.
Trisagion: Sprinklers will shoot beams.
Interactions
BFFS!: Sprinkler increases in size but does not do extra damage.
Dr. Fetus: The sprinkler fires bombs which can damage Isaac.
Epic Fetus: The sprinkler fires crosshairs; missiles will strike the crosshairs after a short delay. This can damage Isaac.
- (Added in Repentance)
Eye of the Occult: Sprinkler's tears travel a very short distance in their original direction and can be controlled afterwards.
Ipecac: The sprinkler fires explosive shots which can damage Isaac.
- Ipecac + Dr. Fetus: The bombs fired by the sprinkler will not damage Isaac.
The Ludovico Technique / (Added in Repentance)
Spirit Sword: The sprinkler will not fire tears at all.
My Reflection: Tears fired from the sprinkler will boomerang towards Isaac instead of the sprinkler.