#440 ยท Passive Item

Kidney Stone

"Matt's kidney stone"

  • -0.2 speed and maximum speed
  • -15 range
  • +2.0 tear height.
  • The increased tear height and decreased range results in overall slightly less firing distance.
  • Occasionally, firing tears will cause Isaac to charge an attack with his head pulsating with a red color. After the attack has charged up, the fire button can be released to fire a kidney stone that deals extra damage while piercing enemies and walls, and to fire a barrage of tears afterwards.
  • This effect occurs approximately every 25 seconds.
  • Isaac won't be able to fire tears normally until the kidney stone has been fired.
  • The kidney stone has approximately twice the range of normal tears.
  • The tears fired afterwards are a bit inaccurate and can be fired slightly to either side.
  • The barrage will continue for its full length between Rooms, as will the state of charging the attack instead of firing tears.
  • When Isaac has half a heart left, the urine that appears underneath Isaac upon entering rooms will be changed to red.
Unlock

Complete challenge #29 ( The unlock is bugged and actually unlocks Blank Rune)

Synergies & Interactions

Found in

  • Treasure Room
  • Treasure Room (Greed Mode)

Video