Happy Pebble is a passive item in Juglans Box, a mod for The Binding of Isaac.

Gives Isaac two small combat stats up at the start of each floor:
• + 0.3 to Damage
• + 0.3 to Fire Rate
• or + 3 to Range

Happy Pebble can be found in the following item pools:

• Download Juglans Box from the Steam Workshop.