Aeon Core Summon Calculator
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Tickets & Cost by Luck
Purchase Plan — Top 50%
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Ancient Core Gacha Calculator Guide
The Ancient Core event runs on a fixed schedule, with reward efficiency that varies based on the pity counter (your accumulated pull count) and the current event day. Enter your current counter, the event day, and your target core count, and this calculator works out which packages to buy and when to reach your goal with the fewest gems.
Rather than just answering "how many gems do you need," it produces an optimal purchase plan that accounts for per-package gem cost, the bonus tied to each event day, and the guaranteed reward at pity. The number of cores you can pull from the same gem budget shifts with the order and timing of your package purchases, so planning ahead with this calculator helps avoid wasted resources.
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Enter a gem budget that matches what you are willing to spend, and the optimal purchase plan within that budget is shown alongside. F2P and light spenders can preview how many cores are reachable with free rewards and mission gems alone, while paying users can compare optimal package combinations across spend tiers before the event begins.
Frequently Asked Questions
QWhere do I find the pity counter (luck value)?
Your current accumulated pull count is shown at the top of the in-game Ancient Core event screen. The calculator uses the entered counter to compute the remaining pulls to pity, so enter 0 right after the event begins, or the current counter value if you have already pulled a number of times.
QCan I buy packages outside the recommended ones?
The recommended packages are sorted by overall value, combining unit cost, day-tied bonuses, and efficiency on the path to pity. Buying additional packages will get you more cores, but the gems-per-core efficiency typically drops — so within your spending limit, following the recommended order is the standard approach.
QWhy does the result change with the event day?
Daily free rewards, accumulated mission gems, and the timing of additional package releases all vary by event day, so the optimal purchase plan for the same target shifts day by day. The closer you are to the end of the event, the larger the extra spend required to finish in time — so set your plan with this calculator early in the event whenever possible.
QWhat does the pity reward look like?
Hitting pity guarantees a mythic-grade core. The calculator includes the cost up to pity in its optimal purchase scenario, so the "required Aurora" in the result already accounts for the spend needed to reach the guaranteed reward.
