Serpent's Kiss

Serpent's Kiss is a passive item added in Afterbirth.

Effects

 * Grants a chance to fire poison tears, dealing damage over time when inflicted.
 * Inflicts poison on enemies who make contact with the character.
 * Enemies who are killed after they have been inflicted with this type of poison have a 20% chance to drop Black Hearts.

Interactions

 * : The laser will poison enemies but never generates black hearts.
 * : The laser will poison enemies but never generates black hearts.
 * : The laser will poison enemies but never generates black hearts.

Synergies

 * : The black ring created by the Athame applies the poison from Serpent's Kiss. This means enemies killed will have a higher chance to drop black hearts.
 * Invulnerability: Contact while invincible poisons enemies.
 * /: Allows harvesting endless black hearts from Stone Grimaces as they can be (invisibly) poisoned by touching them, then destroyed with Euthanasia/Little Horn and made to respawn by leaving the room.
 * : Grants the character a 100% chance of firing poison tears.
 * : Extends the duration that enemies stay poisoned, dealing more damage over time.
 * : The low damage and high fire rate increases the chance of enemies and bosses being poisoned.
 * : Adds to the chance of firing poison tears, based on the character's Luck stat.

Trivia

 * Most likely referencing Viper (Madame Hydra), who has green lipstick and has transmitted poison through hollow fangs or poisoned lipstick before.

Seeds
NFMD MEVX (Treasure room adjacent to spawn) E14Y Q0Z7 (Treasure room adjacent to spawn) QZC2 FNKQ (Treasure room adjacent to spawn) 7BXL YJFT (Treasure room two down from spawn then one to the left )