Mom's Locket

Mom's Locket is a trinket added in the Binding of Isaac: Afterbirth expansion.

Effects

 * Grants half a red heart each time a key is used.
 * Turns half red hearts on the ground into full red hearts.

Synergies

 * Dark Bum - Gives the bum more hearts to turn into soul hearts, which is very useful for a ??? run.
 * Gimpy - Half hearts dropped occasionally from killing enemies will become full hearts.
 * Guppy's Tail - Increases chance of getting golden chests, giving Isaac more locks to open.
 * Humbling Bundle - Turns half Hearts into 1+1 Hearts.
 * Little C.H.A.D. - Changes Little C.H.A.D.'s half hearts into full hearts.
 * Skeleton Key - Gives Isaac a lot of keys to spend.