The Nail

The Nail is an unlockable activated item.

Effects

 * On use:
 * Gives one Soul Heart, +0.7 damage, -0.18 speed, and the ability to destroy most obstacles by walking into them. Cannot be stacked in one room.
 * Gives half a Black Heart, +2 damage, -0.18 speed and the ability to destroy obstacles for the current room.
 * Allows Isaac to deal 40 contact damage to enemies for the current room. Does not prevent Isaac from taking contact damage. It can be applied only once per second per enemy.
 * Isaac's tears become red for the current room.



Trivia

 * The item's effect is a reference to the Nail of Vlad item in Castlevania II: Simon's Quest; equipping it would allow Simon to break certain obstacles such as rocks.
 * In the original The Binding of Isaac, The Nail was unlocked by beating Mom's Heart three times.
 * This item shares the same item description as Sulfur.
 * Biblically, this item likely references the nails used to pin Jesus Christ to the cross.