What is the rarest Brainrot?

Currently, the OG rarity is the highest, surpassing Secret. Examples typically include event-specific Brainrots.

How do I get Brainrots?

You can purchase them from the conveyor or steal them from other players' bases if they are unlocked.

What is Steal a Brainrot?

Steal a Brainrot is a thrilling Roblox game by BRAZILIAN SPYDER where you collect brainrots, build wealth, and compete on the leaderboard.

How does the fusion system work?

You can use the Fuse Machine to combine two brainrots and create new, rarer brainrots. Special fusion machines like Santa's Fuse and Witch Fuse offer unique combinations.

La Vacca Lepre Lepreino

Secret

LEPRECHAUN LUCKY BLOCK

Base Cost

$255.0M

Price Format:

• K = 1,000

• M = 1,000,000

• B = 1,000,000,000

• T = 1,000,000,000,000

Income per Second

$1.1M

Price Format:

• K = 1,000

• M = 1,000,000

• B = 1,000,000,000

• T = 1,000,000,000,000

Efficiency

0.43%

Event

St Patricks Event

La Vacca Lepre Lepreino is a Secret-tier Brainrot in Steal a Brainrot and a live Leprechaun Lucky Block drop from ST PATRICKS. It appears as a cow-faced cauldron packed with gold coins, standing on green-socked legs with buckle shoes while a ring of coins circles the body. La Vacca Lepre Lepreino matters because it upgrades a previously uncertain teaser into a real Secret chase target with a now-settled canonical name.

Secret brainrot generating $1.1M/second

La Vacca Lepre Lepreino is live in the Leprechaun Lucky Block pool during ST PATRICKS in Update 42. The block can be bought from the Runway / Red Carpet for 400M Cash, bought as a Premium Leprechaun Lucky Block from the Robux Shop for 649 Robux or 1,947 Robux for 3 (includes mutation), or spawned naturally after collecting 50 coins.

Identity & Availability

Release Status

Released

Primary Route

Leprechaun Lucky Block

Event Source

St Patricks Event

Visual Structure

Standalone

Current Availability

Explore This Family

Follow the strongest internal paths around this brainrot: event lineups, route collections, and composite relationships.

More from St Patricks Event

Characters tied to the same event window or event-specific rollout.

Open Page

More Leprechaun Lucky Block Brainrots

Other entries reached through the same machine, system, or collection route.

Open Page

Secret Picks

Peers from the same rarity tier.

Visual Structure

Prototype

Structured prototype tags extracted from the brainrot's identity and visual design.

CowRabbit

How to Obtain

LUCKY BLOCK

Obtained by opening Lucky Blocks.

Source: Leprechaun Lucky Block

All Lucky Block →

Purchase

Open the Leprechaun Lucky Block during ST PATRICKS for a chance to obtain La Vacca Lepre Lepreino. The current block evidence lists Runway / Red Carpet purchase for 400M Cash, Premium Robux Shop purchase for 649 Robux or 1,947 Robux for 3 (includes mutation), or a natural spawn after collecting 50 coins.

Steal

Steal La Vacca Lepre Lepreino from active bases after another player opens the event lucky block and places it.

Pro Tips

Plan around repeated block openings and quick steals, because La Vacca Lepre Lepreino now sits in the Secret tier with a verified $255.0M value and $1.1M/s income.

Mutation Income Calculator

Select Mutation

Time Period

Income with Default mutation

3.9B/h

Base: $3.9B/h → +0%

View all mutations at hourly rates

Mutation	Mult	Income
Default	1x	$3.9B
Gold	1.25x	$4.9B
Diamond	1.5x	$5.9B
Rainbow	10x	$39.6B
Bloodrot	2x	$7.9B
Celestial	4x	$15.8B
Candy	4x	$15.8B
Lava	6x	$23.7B
Galaxy	6x	$23.7B
YinYang	7.5x	$29.7B
Radioactive	8.5x	$33.6B
Cursed	9x	$35.6B
Divine	10x	$39.6B
Cyber	11x	$43.5B

Release Status

Released

Released during ST PATRICKS in Update 42 on March 14, 2026. Cross-checks currently support the La Vacca Lepre Lepreino spelling and a live $255.0M value / $1.1M/s income.