Concussion

Trunk-only: This article pertains to a feature of Crawl which is being tested. It will likely change before the next release, and may even be removed entirely.

It pushes those it hits backwards, briefly stunning them in the process. If it pushes them into a solid feature, they will instead take an additional one-quarter of any damage that pierces their armour.

The Concussion brand does the following:

Pushes mobs backwards and stuns them, with duration proportional to weapon delay to prevent stunlocks.

If a monster is the primary target ^[1], the player will follow.

If the monster is knocked into a solid feature ^[2], they take an extra 25% damage instead of being stunned.

Sources

Only generates on Maces and Flails, and is available through both random generation and Scroll of Brand Weapon.

History

In 0.34, concussion will be added along with several other weapon type specific brands.

References

↑ e.g. any normal attack, but not Wu Jian's whirlwind or Oni's potion cleave.
↑ Solid features are any non-traversable terrain parts, including statues, walls, and trees, but not monsters.

Brands
Melee weapons	General	Antimagic • Chaos • Distortion • Draining • Electrocution • Flaming • Freezing • Heavy • Holy wrath • Pain • Protection • Reaching • Spectral • Speed • Vampiric • Venom
	Weapon type	Devious • Valour • Concussion • Sundering • Entangling • Rebuke
	Artefact	Curare • Deathbane • Dragon slaying • Reaping • Silver
Launchers		Antimagic • Chaos • Draining • Electrocution • Flaming • Freezing • Heavy • Holy wrath • Penetration • Speed
Throwing weapons		Atropa • Curare • Datura • Disjunction • Poisoned • Silver

[1] .g. any normal attack, but not Wu Jian's whirlwind or Oni's potion cleave.

[2] Solid features are any non-traversable terrain parts, including statues, walls, and trees, but not monsters.

[1]

[2]