Shard Mercy System: How to Calculate Your Legendary Odds

Every shard summon is a hidden dice roll, and the mercy system quietly tilts that dice in your favour the longer your dry streak runs. It is not a fixed promise of a legendary at some magic number — it is a ramp that ends in a hard guarantee. Here is how it works, how to track it, and how to stop guessing your odds.

Mercy in plain terms

Ancient and Void shards sit at roughly 0.5% legendary chance per summon. Sacred shards are much higher, around 6%. When you go a long stretch without a legendary from a given shard type, the game starts raising your per-summon chance, and it keeps raising it until a legendary is effectively certain.

The important part: mercy guarantees that a legendary drops, not which one. You can hit the threshold and pull a duplicate. So plan your shard pools around «I need any legendary to move my account forward», not «I need this specific champion».

The exact curve is not published by the developer. Everything below comes from community measurements and the in-game rate descriptions, so treat the figures as close estimates rather than gospel.

Base rates and thresholds

Counters are separate per shard type: Ancient pulls do not advance your Void counter. Any legendary pulled from that shard type resets the counter, duplicates included. A legendary from a fusion, an event or a tournament does not touch it, because it did not come from a shard.

Running the numbers yourself

Chance of at least one legendary across N summons: 1 − (1 − p)^N, where p is the per-summon chance.

• 50 Ancients at 0.5% — roughly 22%.
• 100 Ancients — about 39%.
• 200 Ancients — about 63%.
• 12 Sacreds at 6% — about 52%.

That is the reality check: even a long streak does not give you «almost certain». Variance is brutal. Some accounts pull three legendaries in ten shards, others go a hundred summons dry. That is exactly why concentrating on one shard type beats spreading pulls across three counters — you reach the zone where mercy actually bites much sooner.

Tracking your counter

• Keep a note or a spreadsheet: shard type, date, number of summons, result.
• Reset the row the moment a legendary drops, not «later».
• Never mix shard types in one row, or your data is worthless.
• Mark whether the pull happened during a x2 event — it does not change the counter, but it makes your statistics readable.

A word for newer accounts: chasing legendaries early is usually a waste. Kael, Athel, Elhain and Galek carry the early game fine, and your first serious shard pool is better opened once you actually know what your roster is missing.

x2, x10 and mercy

A x2 event doubles the base rate: for Ancients that is roughly 1% instead of 0.5%. Mercy keeps working during the event and the counter is tracked the same way. A x10 event does not raise the legendary chance at all — it only increases the odds that the legendary you do pull comes from a specific shortlist.

Practical takeaway: if your counter is already close to the threshold, waiting for x2 is worth it — you stack the boosted base rate on top of the mercy ramp. If the counter is near zero, there is little reason to wait.

Common myths

• «Mercy is shared across all shards» — no, each type has its own counter.
• «Pulling ten at once is better» — no, each summon is independent; a batch just saves clicks.
• «The counter resets when you change device» — no, it is tied to the account.
• «A fusion legendary reset my counter» — no.
• «At the threshold you get the champion you want» — no, only a legendary is guaranteed.

Summary

Mercy is insurance over the long haul, not a shortcut to a legendary. Calculate real probabilities, track each shard type separately and keep your pools apart. Stockpile one shard type, hold it for x2 when the counter is close to the threshold, and never expect the guarantee to hand you a specific champion. That is the point where shard opening stops being a slot machine and becomes planning.