Mom's Box

Mom's Box is an activated item added in Afterbirth.

Effects

 * Upon activation, drops a random trinket on the ground.
 * +1 Luck while held.
 * While held, doubles the effect of most trinkets.

Synergies

 * Blind Rage: Grants much longer invincibility after taking damage than normal.
 * Cancer: Grants -4 Tear Delay instead of -2. When Isaac's tears stat is at its maximum, resulting in 5 tear delay, this synergy reduces tear delay all the way down to its minimum of 1.
 * Curved Horn: Grants +4 Damage instead of +2.
 * Goat Hoof: Grants +0.3 Speed instead of +0.15.
 * Lucky Toe: Grants +2 Luck instead of +1.
 * Whip Worm: Grants +1 Shot Speed instead of +0.5.
 * Hook Worm: Grants +20 Range instead of +10.
 * Tape Worm: Quadruples your Range instead of doubling it, and your Tear Height stat isn't halved.
 * Lazy Worm: Grants +8 Range instead of +4, +4 Tear Height instead of +2 and your Shot Speed is reduced by -0.8 instead of -0.4.
 * Lil Larva: Two Flies spawn from each poop instead of one.
 * Swallowed Penny: Drops two coins instead of one.
 * Golden Horse Shoe: Increases the double item room spawn chance to 30%
 * Maggy's Faith: Gives two eternal hearts at the start of each floor (and thus a full heart).
 * Smelter / Gulp! pill: Most absorbed trinkets will still have their effects doubled.