Apple!

Apple! is a passive item added in Afterbirth †.

Effects

 * Adds a chance to fire razor blades that deal quadruple Isaac's tear damage.
 * The chance to fire a razor blade depends on the luck stat, and goes up to 100% at 14 luck.
 * +0.4 tears.

Interactions

 * Sinus Infection - Tears can gain the effects of razors, boogers, or both, though the chance for both to occur on the same tear is low. Razor blades visually override boogers in these cases.
 * Tough Love - Tooth shots are overridden by the razor blades, though at under 14 luck it's possible to get both.
 * The Ludovico Technique - The tear will get bigger in some rooms, but the damage doesn't appear to be applied.

Trivia

 * Both the item itself and the description is possibly a reference to one of Isaac's nightmares between floors that involves him finding a razor blade inside a piece of candy.
 * The item and pickup quote are a reference to the urban legend of giving away candies with razor blades as a way of committing murder.

Apple!