Revision as of 04:53, 16 April 2021 by 172.87.136.87(contribs)(Just a small capitalization error that made monkey brain go brrrr under the section "However, Luck doesn't affect:")
Room drops: For calculating room drops, luck is capped between 0 and 10, with higher luck not only resulting in higher amounts of drops but also higher quality drops such as chests.
Room drop rates are otherwise identical in Normal and Hard game modes, but Hard mode removes 65% of heart-type drops, replacing them with nothing.
Tear effect chance: The chance of shooting tears with status effects becomes more likely as Luck goes up. This scales up to 100% chance per tear in most cases with enough Luck.
Most of the status inflicting effects require high Luck to activate on every tear.
Since these effects persist on the enemies for a set amount of time regardless of the Tears stat, a fast rate of fire is often enough to affect an enemy indefinitely.
+1 luck. Improves Isaac's chances at various random events (independent from the luck stat). Converts all bad pills into good pills, without identifying them.
Luck affects a variety of chance-based effects and is represented by a 3-leaf clover.
Abaddon (Tears cause fear) - 100% at 85 Luck
Apple! (Razor tears) - 100% at 14 Luck
Quality
Mom's Box
Soul Heart and +1 luck. Spawns 2 
Keys.
Red Heart.
+1.25 range, +0.5 tear falling speed, +1 luck.
Secret Rooms, 
Crawl Space entrances, and tinted rocks.
Chest, destroying a machine, or blowing up a tinted rock.
The Binding of Isaac: Rebirth
