Ciacco the Swollen
Boss · The Carrion Mire · band C, The Nine Circles

Where Ciacco the Swollen waits
Ciacco the Swollen holds the gates at depths 9,700, 10,000, 10,300, 10,600, 10,900, 11,200 and onward in The Carrion Mire, sharing the zone's 100-depth gate rhythm with The Threefold Maw and The Sleet Warden.
What Ciacco the Swollen is
Ciacco the Swollen is a Wight: it swings an axe, and the body asks for burst damage — it heals as it fights. As a boss it wears the type's defences at 35%, carries no status of its own, and enrages below half health: it hits harder and moves faster.
Ciacco the Swollen by the numbers
The card at each gate — health, damage per swing, armour and the modifiers it rolls — straight from the game's spawn table. On the floor the boss leads with 60% of the card's health and 60% of its damage, before the road's own pressure.
What those modifiers do
OF ENDURANCE- gains an Endurance charge every second while hit recently: +15% physical reduction and +15% to the elements each, up to 3
MANGLING- +35% chance to cause bleeding
OF DAMAGING- the pack within 4.5 tiles hits 25% harder
DEADLY- +20% critical strike chance
VAMPIRIC- heals 1.5% of its maximum health with every blow it lands
OF POWER- gains a Power charge on every hit it lands: +200% critical chance each, up to 3
ETHEREAL- takes 60% less from HITS, and double from damage over time
REGENERATING- Heals 1% of its maximum health every second
VENOMOUS- +35% chance to poison you
STORMSHIELDED- +75% lightning resistance (capped at 75%)
OF PRECISION- the pack within 4.5 tiles crits 15% more often
EVASIVE- +22% chance to dodge your hits
LUCKY- 15% of its blows land twice over
EXPOSING- every blow cuts your resistances by 15 for 4 s
BURNING- +35% ignite chance; a quarter of its physical damage becomes fire
CHILLING- Turns 30% of its physical damage into cold
OF THE EXECUTIONER- you recover half as much within 4.5 tiles of it
Modifiers are rolled per depth and are the same for every player. Bosses always carry at least 3 and never a pace modifier (SWIFT, BRUTE), so a boss's swing rhythm is its own; of the seals only the walls — BLOODLESS, INERT, ASHEN, ETHEREAL, DENSE — ride a boss. The full list is in Enemy modifiers.
At its first gate Ciacco the Swollen leads with 1,112,908,103 health, against 1,483,558,982 for the leader one floor above, and swings every 1.25s.
What a gate floor is
A gate is a floor like any other, with the boss leading its last pack. Nothing below it opens until the floor is cleared. A lost floor costs nothing; you can fight it again. How a floor is fought is under Combat.
Fight Ciacco the Swollen — play free