Heartcliff Calculator
The chance of each egg in a Heartcliff search. Pick the dragon you're searching for and your parents' rarities: better parents only raise the chance of the featured dragon. Rare searches use dragons of the two parent species; Elusive and Premium searches use the event's own dragons. Set how many elusives and uniques your search shows, since the pool doesn't always hold every one.
Deadly Nadder × Stormcutter · Sep 21, 2026 – Oct 12, 2026
Search for
| Egg | Chance | Odds | All together |
|---|---|---|---|
| Whooshwhizzfeatured | 0.77% | 1 in 131 | |
| Deathly Galeslashfeatured unique | 0.077% | 1 in 1,307 | |
| Deadly Nadder | 76.5% | 1 in 1.3 | |
| Stormcutter | 11.5% | 1 in 8.7 | |
| Each elusive (×17) | 0.61% | 1 in 163 | 10.4% |
| Each unique (×5) | 0.15% | 1 in 654 | 0.77% |
Time to find the featured dragons
Each search takes as long as the egg it finds, so these are averages over every egg, one search at a time, with the parents chosen above for each search and the same pool. Runes are what speeding up every one of those searches would cost.
| Featured dragon | Parents | Chance | Average searches | Average time | 50% chance within | 90% chance within | Runes to speed up |
|---|---|---|---|---|---|---|---|
| Whooshwhizz (Rare) | Common + Common | 0.77% | 131 | 55d 9h | 91 (38d 13h) | 300 (127d 3h) | 18,965 runes |
| Festival Roilwing (Elusive) | Whooshwhizz + Deathly Galeslash | 4.95% | 20 | 9d 8h | 14 (6d 11h) | 46 (21d 6h) | 3,171 runes |
| Mortiferous Pickbloom (Premium) | Festival Roilwing + Deathly Galeslash | 3.35% | 30 | 14d 15h | 21 (10d 7h) | 68 (33d 9h) | 4,905 runes |
| Deathly Galeslash (Featured unique) | Whooshwhizz search: Common + Common | 0.077% | 1,307 | 553d 18h | 906 (383d 21h) | 3,009 (1274d 20h) | 189,653 runes |