Cancellation

# How it works

«Cancellation» is a single-target magic skill. Cast time 6 seconds, cooldown 30 seconds, range 600. The skill has 12 levels; the level affects only the MP cost.

Order:

1. The skill always lands: it has no chance of its own, and the target's shield, «M. Def.», «CON» and «MEN» do not affect it. Does not work on an invulnerable target.
2. The target's removable buffs are taken: songs and dances first, then the rest, starting with the ones applied last.
3. A separate roll for each effect in turn.
4. The rolls go on until 5 effects are removed or the list ends.
5. If not a single roll succeeds, one random effect from the list is removed. Every use on a target that has something to remove removes at least one effect.

Not removed: debuffs, toggle skills, effects of hero skills, effects of potions and items, passive skills, effects triggered on their own by another skill.

# What depends on what

Three things affect the result of a use: how many removable effects the target has, its removal resistance and the order in which the effects were applied.

What affects the removal and what does not

What	Affects	How
Number of buffs on the target	yes	the more there are, the more rolls and the more often all 5 are removed
Target's resistance to buff removal	yes	divides the chance per effect: 25 / (1 + resistance / 100), not below 10%
«Arcane Chaos» on the target	yes	cancels the target's resistance, and without resistance raises the chance per effect to 35.7%
Order in which effects were applied	yes	songs and dances, then the rest from the last applied - the first in line are lost more often
Target's invulnerability	yes	the skill does not work
Jewelry, including Grand Boss jewelry	none	no piece of jewelry gives removal resistance
Skill level	none	changes only the MP cost
Target's level and mage's level	none
The mage's «M. Atk.», the target's «M. Def.», «CON» and «MEN»	none
Target's shield	none
General debuff resistance and resistance to mental attacks	none
Level and remaining time of the effect being removed	none

# Chance per effect

Chance to remove one effect = 25 / (1 + target's removal resistance / 100), not below 10% and not above 90%.

Examples: without resistance 25 / 1 = 25%; with «Arcane Protection» (resistance 30) 25 / 1.3 = 19.2%; with «Arcane Protection» and «Lionheart» (resistance 70) 25 / 1.7 = 14.7%; at resistance 150 and above the chance hits the lower limit of 10%.

Protection is given only by skills and one talisman - they are listed in the table below. Jewelry, including Grand Boss jewelry, gives no protection from removal.

«Arcane Chaos» on the target works the other way: it cancels the target's resistance, and against a target without resistance it raises the chance to 35.7%.

Chance for one effect by target's resistance

Target's removal resistance	Chance for one effect
«Arcane Chaos» on the target, no resistance of its own	35.7%
no resistance	25.0%
5	23.8%
30	19.2%
40	17.9%
70	14.7%
80	13.9%
110	11.9%
150 and above	10.0%

What gives resistance to buff removal

Resistance	Source
5	«Warrior Ability - Resist Trait» - a passive subclass certification skill, always active
30	«Arcane Protection» or «Pet Arcane Protection» or «Arcane Protection (Event)» or «Chant of Spirit» or «Pa'agrio's Emblem»
40	«Magnus' Chant»
40	«Lionheart»
40	«Angelic Icon»
40	«Flame Icon»
80 or 40	«Ultimate Defense» (80) or «Vengeance» (80) or «Zealot» (40)
80 or 90	«Ultimate Evasion» (80) or «Wind Riding» (80) or «Exciting Adventure» (90) or «Ghost Walking» (90)
40 or 80	«Heroic Valor» (40) or «Heroic Miracle» (80) or «Heroic Berserker» (80)
100	«Touch of Life» or «Touch of Eva»
100	«White Talisman of Protection»
-30	«Arcane Chaos» on the target

# How many effects are removed

The result of one use depends on the number of removable effects on the target and on its resistance. Against a fully buffed target without resistance all 5 effects are removed in more than half of the uses. The fewer effects the target has and the higher its resistance, the more often a use removes only one effect - the one that is removed in any case.

How many effects are removed on average per use

How often only one effect is removed

Example: a target with 22 buffs

On the target	Resistance	Chance per effect	Removed on average	All 5	Only one
nothing	0	25.0%	4.4	67.7%	1.5%
«Warrior Ability - Resist Trait»	5	23.8%	4.3	62.9%	2%
«Arcane Protection»	30	19.2%	3.8	42%	5.7%
«Arcane Protection» and «Warrior Ability - Resist Trait»	35	18.5%	3.7	38.7%	6.6%
«Arcane Protection» and «Lionheart»	70	14.7%	3.1	21.4%	14.5%
«Arcane Protection» and «Ultimate Defense»	110	11.9%	2.6	11.2%	24.4%
«Arcane Protection» , «Lionheart» and «Ultimate Defense»	150	10.0%	2.3	6.2%	33.9%
«Arcane Protection» and «Arcane Chaos»	0	25.0%	4.4	67.7%	1.5%
«Arcane Chaos» , no resistance of its own	-30	35.7%	4.9	93.7%	0.1%

# Cooldown

30 seconds is the base cooldown of «Cancellation» . Every source that speeds up the cooldown of magic skills multiplies it by its own multiplier, and the multipliers are multiplied together. A mage with the passive skill, a song and the seraphim's effect has a cooldown of about 12.5 seconds, with a boss necklace - about 11 seconds, and with the vote rune - less than 10 seconds.

What shortens the cooldown

Source	What it is	Multiplier	Cooldown with this source alone
«Quick Recycle» level 3	passive skill, both classes with «Cancellation» have it from level 48	× 0.80	24.0 seconds
«Song of Renewal»	song, 2 minutes	× 0.80	24.0 seconds
«Gift of Seraphim»	buff, 2 minutes	× 0.65	19.5 seconds
«Eva's Rune»	rune, works while it is in the inventory vote reward	× 0.80	24.0 seconds
«Olympiad Warrior's Necklace»	necklace, while equipped	× 0.95	28.5 seconds
«Blessed Necklace of Freya»	necklace, while equipped	× 0.95	28.5 seconds
«Necklace of Frintezza»	necklace, while equipped	× 0.95	28.5 seconds
«Improved Necklace of Frintezza»	necklace, while equipped	× 0.93	27.9 seconds
«Necklace of Valakas»	necklace, while equipped	× 0.90	27.0 seconds
«Improved Necklace of Valakas»	necklace, while equipped	× 0.87	26.1 seconds

Cooldown with everything combined

# Tested on the server

The rules above are verified on the real server code: a character with real buffs is created, the skill is used on it 1000 times, and the outcome is counted. More than 5 effects were not removed in a single use. Separately, the removal calculation was called 1 000 000 times on the same targets - there was not a single empty result.

1000 uses per row

Target	Resistance	Chance per effect	Only one removed	All 5 removed	Removed on average	By the rule
1 effect, no resistance	0	25.0%	100.0%	0.0%	1.00	1.00
5 effects, no resistance	0	25.0%	62.4%	0.1%	1.48	1.49
10 effects, no resistance	0	25.0%	25.1%	7.1%	2.49	2.53
20 effects, no resistance	0	25.0%	2.2%	57.6%	4.23	4.24
5 effects, «Arcane Protection»	30	19.2%	75.6%	0.1%	1.29	1.31
10 effects, «Arcane Protection»	30	19.2%	39.7%	1.9%	2.01	2.04
20 effects, «Arcane Protection»	30	19.2%	7.8%	35.7%	3.61	3.58
22 effects, «Arcane Protection» and «Heroic Valor»	70	14.7%	14.6%	20.7%	3.14	3.13
22 effects, «Arcane Protection» and «Ultimate Defense»	110	11.9%	24.7%	10.6%	2.63	2.63
23 effects, «Arcane Protection» , «Heroic Valor» and «Ultimate Defense»	150	10.0%	31.2%	7.1%	2.35	2.36
12 effects, «Arcane Protection» , «Heroic Valor» and «Ultimate Defense»	150	10.0%	66.2%	0.3%	1.47	1.48

# Specifics of our server

The skill's numbers are taken from the data of the official High Five servers (PTS): chance 25 per effect, no more than 5 effects, cast time 6 seconds, cooldown 30 seconds, resistance 30 for «Arcane Protection» . Nobody knows for certain how exactly the official server calculates the removal inside: there is no public description, and the known builds interpret the same numbers differently. So on our server the rule is set explicitly:

1. The skill always lands, the chance is rolled for each effect separately.
2. Removal resistance divides the chance: 25 / (1 + resistance / 100). Resistance from different sources adds up.
3. The chance per effect is never below 10%.
4. The level of the effect being removed and its remaining time do not affect the chance.
5. Every use removes at least one effect: if all the rolls fail, one random effect is removed.