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Effects[edit | edit source]
- Many items and trinkets that generate blue flies, blue spiders or locusts will generate twice as many.
- Also doubles the flies generated by the Guppy transformation.
Notes[edit | edit source]
- Flies may spawn on top of each other, appearing as a single fly initially.
Interactions[edit | edit source]
- 7 SealsGrants a random Harbinger familiar that changes every 10 seconds.: No effect.
- CompostSpawns a blue spider or fly. Turns pickups in the room into blue spiders or flies.: No effect on spiders, fly generation is doubled.
- Infestation 2Spawns allied blue spiders from killed enemies.: No effect.
- Juicy SackA familiar that follows behind Isaac. It drips a trail of creep, which slows enemies, and spawns 1-2 blue spiders after each room.: No effect.
- LouseOccasionally spawns a Blue Spider.: No effect.
- Mom's BoxWhen used, Mom's Box will drop a random trinket on the ground. While held, increases luck by 1 and doubles the effects of trinkets.: Does not further increase effect of the trinket.
- Mom's WigAdds a chance to spawn blue spiders when firing tears. Restores 1 red heart.: No effect.
- ParasitoidAdds a chance to fire an egg sack which spawns slowing creep and spawns a blue fly or spider upon hitting an enemy.: No effect on spiders, fly generation is doubled.
- Rotten BabyA familiar that spawns blue flies.: Causes Rotten Baby to spawn two flies at a time.
- Spider BabyWhen hit, spawns up to 2 blue spiders.: No effect.
- Spider ModDisplays Isaac's tear damage and enemy health bars. Spawns a gray spider familiar that wanders around and inflicts a random status effect on any enemies it comes into contact with. Occasionally spawns a blue spider upon clearing a room.: No effect.
Synergies[edit | edit source]
- Keeper: Flies that replace Heart drops are doubled.
In-game Footage[edit | edit source]
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