What does the Spider Mod add?

I am thinking about downloading the spider mod for TBOI for the cool tweaks I heard it has, but I can't find information about them. What exactly does the spider mod add?

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1 Answer

Welp. It says this on the main page.

Main features are:

Almost everything is seeded. In Game item description (provided by Elucidate) Boss presets for floor editor Fractional HP on hit (hp/maxhp) information. 2 saves! Spawn game objects

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