Booster Cookie

The Booster Cookie is a consumable that can be consumed for multiple benefits that last for 4 days. Multiple cookies can be consumed at once to increase the duration.

Obtaining
A Booster Cookie can be bought from the Community Shop using SkyBlock Gems, or from the Bazaar.

Elizabeth will give every player one, untradeable Booster Cookie for free, and she will sell you additional Booster Cookies for 325 Gems each, with no discounts for buying the bundles of six or twelve cookies she offers.

Ability
The Booster Cookie grants the player the following abilities for 4 days:
 * Ability to gain
 * +20% Skill XP
 * +15
 * Keep and effects on death
 * Permanent flight on your Private Island
 * Access /auction (/ah), /bazaar (/bz), /etable (/et), and /anvil (/av) anywhere (/auction//ah cannot be used while in a dungeon)
 * Sell items directly to the Trades menu
 * AFK immunity on your Private Island
 * Ability to toggle specific Potion effects

The Booster Cookie's duration is real-time, meaning it will continue to count down even when the affected player is offline.

The number of a player can earn depends on their bit multiplier. A player's bit multiplier can be increased by getting a higher Fame Rank. The number of that can be earned per cookie is 4800 * (Bit multiplier). is worth from selling Bits Shop items.

Trivia

 * : There is currently an extremely rare bug that when going between servers in SkyBlock, that the Booster Cookie boost can randomly bug out and will be removed. This is not visual or temporary, the only way to get back the cookie boost is through consuming another cookie.
 * There is an option to buy more cookies at once from Elizabeth, however buying more will not get you any extra or at a discount compared to simply buying one cookie at a time.
 * There is a purchase limit of 192 of these per day.
 * The Booster Cookie that is given for free to a player by Elizabeth cannot be sold to the Bazaar, the Auction House or to NPCs and cannot be dropped.
 * Disabling a Potion effect does NOT pause it, but instead it simply stops the effect from working on your player. Any duration timers will still tick down as normal, even when disabled.
 * The amount of from each booster cookie is affected by your Fame Rank.
 * It takes roughly 10 hours to get all the out of a cookie. You can afk and still get  if you don't have enough time to actually play the game.
 * Auction House: Use /ah to view the live auctions of a particular player or, with a Booster Cookie consumed, you can do /ah to view the entire Auction House.
 * As of 21 April 2021, Booster Cookies are the only thing a player on an Ironman profile can buy from the Bazaar.
 * As part of compensation for the Hypixel Maintenance that occurred from 17 June 2021 to 22 June 2021, players who had a Cookie Buff active when the maintenance took place were compensated an untradeable Booster Cookie via Jerry.
 * These cookies, like the free cookie given to a player by Elizabeth, cannot be sold to the Bazaar, the Auction House or to NPCs and cannot be dropped.
 * You are still able to toggle potion effects even after the booster cookie expired. However, in order to do this, you must have consumed at least one booster cookie on that profile.

History
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