Shatter is a threshold Constitution ability, unlockable through Raids from either the untradeable Storm Shards and Shatter Ability Codex, or the tradeable Mazcab ability codex. It is unlocked with the Storm Shards ability. When Shatter is cast after Storm Shards, all stacked up damage is applied in one hitsplat, dealing up to a maximum of 30,000 damage. With 10 Storm Shard stacks, Shatter deals 750% to 950% ability damage (an average of 850%). Shatter does work in PvP, although the target's use of Freedom halves the number of Storm Shards and consequently their damage received. With 10 Storm Shard stacks, Shatter deals 250% to 320% ability damage against another player (an average of 285%).
If Shatter is used on a target with no storm shard stacks, adrenaline will be lost, but the ability will not initiate cooldown.
Under most circumstances, Storm Shards consistently deals 30,000 damage or close to 30,000 damage with 10 Storm Shard Stacks while under a damage-boosting ultimate ability.