Displays Isaac's tear damage and enemy health bars. Spawns a familiar that wanders around and inflicts random status effects on enemies it touches. Can spawn a Lil' Battery/Blue spider upon clearing a room.
Spawns a grey spider familiar that wanders around and allows Isaac to see tear damage and the health bars of all enemies.
The spider will inflict a random status effect on any enemies it comes into contact with.
The spider will sometimes drop a Lil' Battery or spawn a Blue Spider when a room is completed.
This item belongs to the Spider Baby set. Collecting three items from this set will transform Isaac into a humanoid spider.
BFFS! - Makes Spider Mod bigger and increases the chance for Spider Mod to spawn a battery or blue spider. No effect on stat effect damage.
Hive Mind - Makes Spider Mod bigger. Whether or not this impacts spawn chances or damage is unknown.