Combat and raids
Ancient and Chaos shards and slates
Each Ancient and Chaos slay mob drops its own shard. Every shard gives a small permanent bonus, and a full set awards a slate with much larger bonuses.
Rules and numbers
- confirmed Ancient shards: one per Ancient mob (6), each 1 in 10,000 and only on that mob's slay task.
ANCIENT_SHARD_ONE_IN = 10000Source: Constants.js:2177-2191; mobs.json (ancient_* rareDrops) - confirmed Chaos shards: one per Chaos mob (12, slay 100-110), each also 1 in 10,000 on task.
CHAOS_SHARD_ONE_IN = 10000Source: Constants.js:2207-2222; mobs.json (chaos_* rareDrops) - confirmed Each owned shard gives +1% movement speed and +1% combat XP.Source: Constants.js:2192-2193, 2223-2224
- dev note Owning the full set awards the slate automatically (it never drops): Ancient Slate at 6 shards, Chaos Slate at 12.Source: Constants.js:2183-2185, 2212-2214
- confirmed Each slate gives +5% move speed, +5% XP to all skills, +5% combat XP, +5% Slay XP, -1 s mob respawn, +1% corruption chance, +1% crit chance and +2% crit damage, and the two slates stack.Source: Constants.js:2194-2205, 2225-2233
- dev note Slate XP lines add together, so a combat skill gets +10% (all + combat) and Slay gets +10% (all + slay) from one slate.Source: Constants.js:2194-2197
- confirmed Chaos mobs also drop the Chaos Gem at 1 in 5,000 and their skill's Chaos tool at 1 in 10,000.Source: mobs.json (chaos_* rareDrops); Constants.js:2235-2237
Connected systems
- Ancient and Chaos shards and slates are tracked in Collection log
- Ancient and Chaos shards and slates raise the chance of Corruption
- Mob drops drops Ancient and Chaos shards and slates
- Ancient and Chaos shards and slates raise Movement speed
- Ancient and Chaos shards and slates drop only during Slay tasks; Ancient and Chaos shards and slates shorten mob respawns during Slay tasks
- Ancient and Chaos shards and slates raise XP per action
Arrows show who acts on whom: → this system acts on the other, ← the other acts on this one, ↔ both do.
More in Combat and raids
Chaos Dungeon · Combat · Combat styles and Life/Spirit · Corruption · Death · Delve (combat raid skill and tree) · Dungeons (tiered raids) · Fortify talent tree · Fortress (skilling raid) · Fortress Ledgers and Banners · Fortress rares · Raid wave respawn · Slay masters · Slay tasks
Statuses: confirmed is a value or rule in the game files; observed is measured from recorded play; dev note comes from a developer comment, tooltip or patch note; inferred is worked out from the files with the assumption stated; unknown is decided on the server. Game data read 2026-10-03.