[HC] True Solar System is a challenge in Heaven's Call, a mod for The Binding of Isaac.

Transcendence
XIX - The Sun
5 random lil moon familiars.

Note: this list does not include characters' default starting items.

All item pools are filled with only lil moon familiars.

The following is unlocked for completing the [HC] True Solar System challenge: Lil Sol

• Download Heaven's Call from the Steam Workshop.