Mutant Spider

Item Icon
Pickup Quote	"Quad shot"
Entity ID	5.100.153
Character Appearance
Item Pool	Crane Game Treasure Room Treasure Room
Quality	3
Item Tags
Collection Grid	(page 2, column 10, row 5) (page 2, column 10, row 2)

Mutant Spider is a passive item.

Effects

• Isaac fires 4 tears at the same time.
• Tears down: (Delay * 2.1) + 3.
• Tears fired per second * 0.42.
• This item belongs to the Spider Baby set. Collecting three items from this set will transform Isaac into a humanoid spider.

Notes

• Mutant Spider is a special item.
• The maximum number of tears per volley that can be reached by combining and/or duplicating 20/20, The Inner Eye, Mutant Spider and The Wiz is 16, or 20 with the Keeper.

Synergies

• 20/20: Shoots 6 tears.
  • Removes the fire rate penalty while reducing damage to 80%. Additional copies will add one additional tear with no further change to damage/fire rate.
• Abyss: When Isaac uses Abyss to absorb Mutant Spider it creates four locusts instead of one.
• Brimstone: Shoots 4 beams at once.
• Cursed Eye: Shoots 4 shots out of each eye, for a total of 16 tears when fully charged.
• Doctor's Remote/Epic Fetus: Replaces the single missile strike with a barrage of four consecutive missiles.
• The Inner Eye: Shoots 7 tears with no further decrease in fire rate.
  • Shoots 5 tears with no further decrease in fire rate.
• Monstro's Lung: Adds 7 tears to the barrage with a significant decrease in fire rate.
• Mutant Spider: Fires 8 tears with no further decrease in fire rate.
  • Each copy of the item adds +2 tears, up to the maximum of 16.
• Polyphemus: Tear rate is not lowered further. Damage is increased by a flat +5 instead of normal Polyphemus boost.
• Tractor Beam: All tears are fired along the beam.
• The Wiz: Four shots are fired in each direction.
  •  : Three shots are fired in each direction.

Interactions

• 20/20: Overridden by Mutant Spider.
• Keeper: Fires 7 tears with significantly decreased fire rate.
  • Fires 5 tears with significantly decreased fire rate.
• Tainted Keeper: Fires 6 tears with significantly decreased fire rate.
• The Ludovico Technique: The tear gains 3 orbiting tears.
• Loki's Horns: Only occasionally fires one tear in the other three directions.
• Mom's Eye: No effect.
  • Fires three shots out of each eye.
• Pupula Duplex + Lachryphagy: The four shots instantly fuse and burst.
• Sad Bombs / Varicose Veins / It Hurts: No effect.

Trivia

• It might be a nod to Spiderman and the general trope of gaining superpowers by being bitten by a radiative animal.
• This item is often called "Quad Shot" by the community instead of Mutant Spider. It shares this with Dead Cat, which is popularly called 9 Lives.

The Binding of Isaac: Rebirth
Achievements Challenges Completion Marks Items Trinkets Characters Chapters Rooms Transformations Attributes Bosses Monsters Pickups Modes Curses Objects Seeds Effects Endings
Collection Item Pools Version History Modding Music