Mutation Consumable Steal an Egg: How to Buy & Use Guide
Learn how to get and use the Mutation Consumable in Roblox Steal an Egg. Step-by-step guide on Boss Shop costs, 10% success rates, and egg mutation mechanics.
Looking to mutate your unhatched eggs in Roblox Steal an Egg? The Mutation Consumable is a powerful item purchased from the Boss Shop that gives players a chance to apply a mutation directly to an unhatched egg before it opens.
In this guide, we will break down step-by-step how to purchase the Mutation Consumable in Steal an Egg, how to apply it to your eggs, and the exact success rates you need to know before spending your Boss Tokens.
Dr. Scramble's Scrambled Mutation Consumable uses the same egg-application method and 10% success chance, but it is purchased with Samples from the Experiment Shop. See How to Use Scrambled for its price, event source, and steps.
After a mutation succeeds, use the Mutation Multiplier Steal an Egg guide to calculate Fractured, Scrambled, Rainbow, and other stacked bonuses correctly.
🛒 Step 1: How to Purchase the Mutation Consumable
To obtain the Mutation Consumable, you need to earn Boss Tokens by defeating bosses or participating in Boss Events.
- Open the in-game menu and click on the Boss Shop.
- Locate the Mutation Consumable item in the shop grid (represented by a glowing purple crystal).
- Purchase the item for 400 Boss Tokens.

Figure 1: Purchasing the Mutation Consumable for 400 Boss Tokens in the Boss Shop.
🥚 Step 2: How to Use the Mutation Consumable on an Egg
Once you have purchased the item from the Boss Shop, follow these steps to apply it:
- Locate any unhatched egg resting in your hatching area.
- Walk towards the unhatched egg.
- Open your inventory and equip the Mutation Consumable.
- Stand next to the egg and hold the 'E' key (or tap the interaction button on mobile) to apply the item.

Figure 2: Holding E to apply the Mutation Consumable with a 10% Success Chance.
⚠️ The Catch: Success & Failure Rates
Before using your hard-earned consumable, keep the RNG odds in mind:
⚡ 10% Success Rate vs. 90% Failure Rate
The Mutation Consumable only gives a 10% chance to successfully mutate your pet. This means there is a 90% chance of failure upon use, which will consume the crystal without applying the mutation effect.
💡 Pro Tip: Because of the low 10% success rate, it is highly recommended to save your Mutation Consumables for high-tier or rare eggs (such as Secret or Divine eggs) to maximize your return on investment!
❓ Frequently Asked Questions (FAQ)
How much does the Mutation Consumable cost in Steal an Egg?
The Mutation Consumable costs 400 Boss Tokens in the Boss Shop.
What happens if the Mutation Consumable fails?
If the 90% failure chance triggers, the item is consumed and your egg remains a standard unhatched egg without mutating.
Can I use multiple Mutation Consumables on the same egg?
Yes, if a consumable fails, you can attempt to hold 'E' with another Mutation Consumable on the same egg until it successfully mutates.
