Lilith gets Cambion Conception, BFFS!, Car Battery, The Battery, Gimpy, Sharp Plug, Charged Baby, Spider Mod, and Child's leash.

Why? Well...

BFFS-Makes all follower stronger
Car Battery- Allows tripling of the follower
The Battery- Allows Double Charging the box of friends
Gimpy- Combined with Sharp Plug it allows the better chance at surviving using it
Sharp Plug- Allows use of Box of Friends more often
Charged Baby- For more use of the Box of Friends
Spider Mod- Just because
Child's Leash- Makes firing more accurate

----------How to install----------
First, open the .rar file, and drag the Player.xml file inside in the resource folder of you The binding of isaac rebirth folder.
This folder is found here:

Windows: C:/Program Files (x86)/Steam/SteamApps/common/The Binding of Isaac Rebirth/resources/

Mac:~/Library/Application Support/Steam/SteamApps/common/the binding of isaac/The Binding Of Isaac.app/Content/Resources/resources/