From Binding of Isaac: Rebirth Wiki
Emergency Contact is a consumable item added in The Binding of Isaac: Afterbirth.
- Spawns up to two of Mom's hands that fall down onto two random enemies in the room, dealing 40 damage.
- Enemies with more than 40 HP and bosses will be pinned to the ground for some time, unable to do anything until the hand releases them.
- When used on Hush, damage resistance is briefly disabled. This can be used to quickly deal large amounts of damage to it.
- Grabs doors when used on Mom.
- Isaac, ???, and first phase of Hush will not retaliate with tears while grabbed.
- The card will have no effect if used in a room without enemies.