Flat File

Flat File is a trinket added in The Binding of Isaac: Repentance.

Effects

 * Makes all spikes retract, preventing them from dealing damage.
 * Most spikes leave behind holes or a visual cue showing where they would normally be.
 * The spikes around Curse Room doors are removed, allowing them to be entered and exited without taking damage.
 * Retracts damaging spikes from Spiked Rocks and Spiked/Mimic Chests.
 * Removes the spikes from Pokies, Slides, and Wall Huggers.
 * Pokies, Slides, and Wall Huggers don't immediately stop moving once they are despiked, and are still able to push Isaac without dealing damage.
 * Has no effect on Grudges, neither retracting their spikes nor despawning them.
 * Causes Spikeballs to despawn.
 * Doesn't despawn or retract the spikes on Ball and Chains.
 * Doesn't cause the moveable spike balls in Singe's boss room to despawn or despike.

Interactions

 * : Doesn't retract spikes placed around consumables in shops.
 * : Retracts the spikes, making the item useless.

Trivia

 * The Flat File assumedly "files" down the spikes, like one would file the jagged imperfections from their nails, or file metal bars to escape from jail.