Member Card

Member Card is a passive item added in The Binding of Isaac: Repentance.

Effects

 * Spawns a trapdoor in each shop that leads to an additional underground shop that can sell 2-5 of the following:
 * A Trinket for 15 cents.
 * An Item for 15-30 cents. Items will be from the Secret Room, Shop, Devil/Angel Room, or Boss Room items; there can be multiple items from different item pools, but items will stay to their chosen item pool if rerolled.
 * Devil/Angel room items can cost up to 50 cents, and Secret Room items can cost up to 99 cents.
 * A Card/Rune/Soul Stone for 6-8 cents.
 * A Black Heart/Bone Heart for 8 cents.
 * An Eternal Heart for 15 cents.
 * A Rotten Heart for 5 cents.