Spells/Contagion

Contagion

Decay

Press to cast. Infect a target with Poison and a contagious zone that deals Decay Damage and spreads Poison to nearby enemies each second.

In the game

On the skill tree

Contagion (Shadow)

Requirements

Class: Shadow

Numbers

Damage0.77

Damage typeDecay

Radius3

Concentration15

Cooldown16 s

Cast time0.6 s

TagsDamage, Class, Plague Magic

Hits and scaling

Hit	Type	Multiplier	How often
Zone tick Each second on the infected target	Decay	x0.77	6 times per cast

What it scales with

Decay hits use Magic Power.
Damage bonus: Decay Damage and Magic Damage from gear and the tree, added together into one bonus.
Magic Power = Intelligence x1, Charisma x0.5, Adventure x0.5, plus flat Magic Power from gear and the tree. Archetype passives add: Elemental Ranger Adventure x0.25, Earthshaker Strength x0.5, Echo Weaver Agility x0.5.
One hit = power x (1 + bonus / 100) x (1 - the target's defence share) x the hit multiplier, rounded up. A critical hit then adds your Critical Damage.

How the game works out a hit

Upgraded by

35 nodes on the skill tree upgrade it.

Bursting Contagion (Shadow)
Coagulating Contagion (Shadow)
Coagulating Contagion Increase I (Shadow), Coagulating Contagion Increase II (Shadow), Coagulating Contagion Increase III (Shadow)
Contagion Cooldown Decrease I (Shadow)
Contagion Damage Increase I (Shadow), Contagion Damage Increase II (Shadow), Contagion Damage Increase III (Shadow)
Contagion Duration Increase I (Shadow), Contagion Duration Increase II (Shadow), Contagion Duration Increase III (Shadow)
Contagion Radius Increase I (Shadow), Contagion Radius Increase II (Shadow), Contagion Radius Increase III (Shadow)
Envenoming Contagion (Shadow)
Envenoming Contagion Increase I (Shadow), Envenoming Contagion Increase II (Shadow), Envenoming Contagion Increase III (Shadow)
Focused Contagion (Shadow)
Inoculated Contagion (Shadow)
Inoculated Contagion Increase I (Shadow), Inoculated Contagion Increase II (Shadow), Inoculated Contagion Increase III (Shadow)
Inoculating Contagion (Shadow)
Inoculating Contagion Increase I (Shadow), Inoculating Contagion Increase II (Shadow), Inoculating Contagion Increase III (Shadow)
Lingering Contagion (Shadow)
Pandemic Cloud (Shadow)
Purging Contagion (Shadow)
Purging Contagion Increase I (Shadow), Purging Contagion Increase II (Shadow), Purging Contagion Increase III (Shadow)
Vector Transfer (Shadow)

What each upgrade changes

Bursting Contagion

	Without	With
Duration change	none	-1 s
Burst damage, times zone tick When the zone ends, before the Poison bonus	This part of the spell's code changed in a later game update, so we show no number.
Burst bonus per Poison on the infected target	This part of the spell's code changed in a later game update, so we show no number.

Coagulating Contagion

	Without	With
Copied Poison per Bleeding	none	4

Each group of copied Poison becomes 1 Bleeding instead; leftovers carry over per enemy.

Coagulating Contagion Increase

Nodes taken	0	1	2	3
Copied Poison per Bleeding With Coagulating Contagion	4	3	2	1

Contagion Cooldown Decrease

	Without	With
Cooldown	16 s	12.8 s

Contagion Damage Increase

Nodes taken	0	1	2	3
Zone tick damage	x0.77	x0.8316	x0.8932	x0.9548

Contagion Duration Increase

Nodes taken	0	1	2	3
Duration	6 s	6.5 s	7 s	7.5 s

The zone ticks once per whole second, so a half second adds no tick: 6.5 s still gives 6 ticks, 7 s gives 7.

Contagion Radius Increase

Nodes taken	0	1	2	3
Zone radius	3 m	3.24 m	3.48 m	3.72 m

Envenoming Contagion

	Without	With
Extra Poison on the infected target at cast Not with Purging Contagion	none	3
Poison per second on other enemies in the zone	1	2

Envenoming Contagion Increase

Nodes taken	0	1	2	3
Extra Poison on the infected target at cast With Envenoming Contagion	3	4	5	6

Focused Contagion

	Without	With
Zone radius multiplier	x1	x0.6
Tick damage on the infected target Infected target only	x1	x1.25

Inoculated Contagion

	Without	With
Max Inoculation consumed	none	5
Radius per Inoculation consumed	none	6%
Duration per Inoculation consumed	none	0.5 s

Inoculated Contagion Increase

Nodes taken	0	1	2	3
Max Inoculation consumed With Inoculated Contagion	5	6	7	8

Inoculating Contagion

	Without	With
Inoculation gained Poison copied to at least one enemy	none	2
Minimum time between gains	none	1 s

Inoculating Contagion Increase

Nodes taken	0	1	2	3
Inoculation gained With Inoculating Contagion	2	3	4	5

Lingering Contagion

	Without	With
Extra ticks after the zone ends	none	3
Lingering tick damage, times zone tick One tick per second for 3 s at the last zone position	none	x0.5

Pandemic Cloud

	Without	With
Zone radius multiplier	x1	x1.25

Purging Contagion

	Without	With
Max Poison consumed	none	10
Tick damage per Poison consumed	none	5%
Poison applied at cast	5	0

The 5% per Poison multiplies with Damage Increase.

Purging Contagion Increase

Nodes taken	0	1	2	3
Max Poison consumed With Purging Contagion	10	12	14	16

Vector Transfer

	Without	With
Remaining duration kept after transfer Infected target dies and an enemy is in the zone	none	x0.5

The new target is the nearest enemy inside the zone radius; once per cast.

Rank it

Compare it with every other damaging spell on the spell ranking.

Spells