Wavy Cap is an active item in The Binding of Isaac, added in the Repentance DLC.

+0.75 fire rate.
-0.03 speed.

Distorts the screen and background music.

The effects can be stacked multiple times, making the colors turn very bright and intense after multiple uses.

Each use increases the item's charge time which starts at 0.5 seconds and goes up to 15 seconds after the 9th use. After the 10th use, it will no longer recharge automatically over time.

Leaving the room doubles the speed penalty and multiplies the fire rate bonus by x0.4 for the uses in that room.

Clearing a room removes one use's worth of penalties and bonuses.

This page shows the latest information as of the new Repentance+ (Online Co-op) DLC.
To see information about this item for the previous Repentance version, check this page instead.

This item contributes towards the Fun Guy transformation. Collecting 3 items from this set will give Isaac +1 full red heart container.

Wavy Cap can be found in the following item pools:

The following tags are applied to this item:

The following special synergies and interactions for Wavy Cap have been documented.

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

Below is the Internal Item Description as shown in-game.
Note that some stat changes are not displayed here. Please see the main description for the full effects.

Wavy Cap

• Grants tears up and a slight speed down, but causes the screen and sound to become slightly distorted
• This effect stacks with multiple activations, granting more stats and making everything increasingly distorted
• Clearing a room removes 1 stack of this item's activation effect
• Abyss: x1 locust .5x Isaac's damage
• Book of Virtues: x1 middle wisp - 2 hp - 1.5 damage
• Book of Virtues: Only 1 Wavy Cap wisp is active at a time

• Check out the item description on the external Isaac Wiki.