Provide validated total-pool, unlocked-count and optional horizon inputs; calculate remaining items, progress, next-target chance, horizon chance and expected position with assumptions beside the results.
The official premise is equal chance without duplicates for qualifying unique rewards. Pool size and reward cadence remain unknown, so enter only values you can see in-game, then use the calculator below.
For Divine Battleground emote odds calculator, use the quick answer first, then check whether the topic affects a code reward, event, item, unit, map, build, value, or upgrade path.