![[👻 Part 2 👻] Alliance Tower Defense! ⚔️ Calculator](/media/optimized/0e458e59ae2e2e20cd0d9d2e-768.webp)
This calculator is arithmetic on a table, not a live mixer. Enter quantities from your own [👻 Part 2 👻] Alliance Tower Defense! ⚔️ session. It will not click the shop.
Material planner
Summon Coin gap
Enter the summon price and Coin balance you see in the lobby. The result is how many Coins you still need for that many flat-price summons.
Required total = materials per upgrade × number of upgrades. Missing = max(required total − materials already owned, 0).
A public summon panel priced one summon at 100 Coins and ten summons at 850 Coins. This form uses one flat price. If you are buying the x10 button, enter 850 as the price and 1 as the count, or enter 85 if you want the per-summon cost of that discounted batch. Quest, code, and chest Coins belong in the Coins you already have box after you claim them. The result is a Coin gap, not a promise of a named unit.
Drop probability
At least one pull
Estimate the chance of seeing one rarity at least once, using the percent printed on your summon panel. This is not a pity calculator.
Chance of at least one success = 1 − (1 − chance per attempt) raised to the number of attempts.
The 0.4 example is only the smallest of six rows read on one public summon panel: 41.9, 29.4, 16, 8.4, 4, and 0.4 percent. Replace it with the row on your screen. The math treats every summon as an independent roll and answers the chance of at least one success. That same panel showed a Legendary counter out of 100 and a Mythic counter out of 1000, so if those denominators are pity, stop trusting this estimate once you are close to the cap. It does not see your luck multiplier.