My Shadow

How do you unlock My Shadow?

In The Binding of Isaac, My Shadow is unlocked by earning the Ultra Greed completion mark as Judas (Character).

[Before Repentance] Inflicts fear on all enemies in the room upon taking damage and spawns black friendly Chargers that attack enemies. / [Repentance] Spawns a shadow familiar that closely follows behind Isaac. It spawns a black friendly Charger whenever an enemy touches it.