Rubber Geode is a trinket in Fiend Folio, a mod for The Binding of Isaac.

Grants a 15% chance to shoot a tennis ball tear that bounces off of enemies, walls and obstacles, and applies Bruising to enemies, making them take +1 damage from all sources.

The chance scales with luck and goes up to 50% with 17.5 luck.

The bruising effect lasts for 3.33 seconds.

Geode Bonus: +15% chance; increases the knockback of tennis balls.

The following special synergies and interactions for Rubber Geode have been documented.

* Note that not all possible synergies and interactions are listed here.

• Check out the trinket description on the mod's external Wiki.
• Download Fiend Folio from the Steam Workshop.