Understanding Egg of Prophecy Power
Eggs of Prophecy are small items with a large effect. They do not add a flat value. They multiply the power of your soul eggs. That is why one more prophecy egg can feel stronger than many normal upgrades.
This calculator focuses on that compounding effect. Enter your soul eggs, current prophecy eggs, and a target count. Then add your soul egg bonus, prophecy research, Book of Basan bonus, prophecy stone bonus, and truth egg bonus. The tool estimates your current earnings bonus, target earnings bonus, gain multiple, and next prophecy egg value.
Why Compounding Matters
A soul egg bonus grows mostly in a straight line. Twice the soul eggs usually means about twice the soul egg part of the bonus. Prophecy eggs behave differently. Each prophecy egg multiplies the previous result again. This creates exponential growth. The effect is modest at low counts. It becomes dramatic when you hold many prophecy eggs.
Use the result as a planning guide. It can show whether a trophy, contract, or calendar reward is worth chasing. It can also compare current progress with a future goal. The target field is useful for checking long term milestones. The next egg estimate is helpful when you want to know the value of one more reward.
Inputs and Accuracy
Game displays can round very large numbers. Artifacts can also change active bonuses. Use the values that match your current setup. If you equip another book or stone, update those fields. If you are not using artifacts, leave those fields at zero.
The calculator accepts scientific notation. You can type values like 1e12 or 4.5e18. You can also use common suffixes like K, M, B, T, q, Q, s, S, o, and N. Keep the same setup when comparing two runs.
Best Use Cases
Use this tool before prestiging. Use it before choosing prophecy rewards. Use it when planning contracts. It helps turn confusing mystic egg numbers into clearer choices. Results are estimates, but they are practical. Export the table when you want a record. Use CSV for spreadsheets. Use PDF for sharing.
Save both versions after major artifact changes or important prestige sessions. This keeps comparisons simple later. Very useful.