Mass Block Shield

# How it works

«Mass Block Shield» is a magic skill that hits all enemies within a radius of 200 around the caster. Cast time 4 seconds, cooldown 30 seconds, lasts 120 seconds.

If the skill lands, the target gets three things at once:

1. Buffs that raise «P. Def.» are removed from it.
2. For 120 seconds such effects can no longer be applied to it.
3. For the same 120 seconds its «P. Def.» is lowered by 10%.

All three parts are one debuff with one icon. It is applied and removed as a whole: while the icon is up, both the block and the 10% reduction work.

# Together with other reductions: P. Def.

The 10% reduction of «Mass Block Shield» does not take the slot of regular debuffs on «P. Def.». It works together with them: neither replaces the other, the order of application does not matter, and the reductions multiply.

When one of the two effects ends or is removed, the other keeps working with its own value.

Target's «P. Def.» under two effects

Second effect	On its own	Together with the block	Calculation
«Hex»	-23%	-30.7%	× 0.77 × 0.9 = 0.693
«Violent Temper»	-23%	-30.7%	× 0.77 × 0.9 = 0.693

# What stacks, what does not and why

Debuffs are divided into groups. Within one group only one effect works on a target, while effects from different groups work together and their reductions are multiplied.

Every effect in a group has a strength. It is set for the skill and is not the size of the reduction. When another effect of the same group is cast on a target that already has an effect of that group:

1. The new one's strength is higher or the same - the new one replaces the old one.
2. The new one's strength is lower - the new one does not land, the old one stays.
3. It is the same skill with the same strength - the new use does not land, the old one's time is not refreshed.

In the second and third cases the success message still comes, and the MP and the cooldown are spent.

«Mass Block Shield» has its own group. It includes only «Mass Block Shield» and «Block Shield», there are no regular «P. Def.» reductions in it.

«Mass Block Shield» and other effects on the target

Second effect	What happens	Why
«Hex» and other debuffs on «P. Def.»	Work together, the reductions are multiplied: with «Hex» × 0.77 × 0.9 = 0.693	Different groups
«Block Shield»	Only one block stays - the one used later. The reduction is 10%, not 20%	Same group, same strength
«Mass Block Shield» again	The new use does not land, the time is not refreshed	The same skill with the same strength
«Block Wind Walk», «Mass Block Wind Walk»	Work together	Different groups
Buffs on «P. Def.» from the section below	Do not land while the block is active	The ban is part of the block

# What does not land under the block

While «Mass Block Shield» is active, the effects from the table below and their pet and buffer counterparts do not land on the target. They can be cast, the MP and the cast time are spent, but there will be no effect. After the block ends they land as usual.

Main effects that are removed and blocked

Skill
«Shield»
«Soul Shield»
«Chant of Shielding»
«Blessings of Pa'agrio»
«Defense Aura»
«Improved Combat»
«Chant of Combat»
«Combat of Pa'agrio»

# Single and mass block

«Mass Block Shield» and «Block Shield» are one and the same block. They do not work together: a new use replaces the old one, the reduction stays 10%, not 20%.

«Block Wind Walk» and «Mass Block Wind Walk» are a different block, it works at the same time as this one.

# Chance and enchant

The skill's base chance is 40%. It depends on the target's «MEN», the level difference and the target's debuff resistance.

The chance enchant raises the base chance to 42-80% over the steps +1 ... +15. The second enchant route lowers the MP cost and raises the base chance to 41-60%.

# Tested on the server

Checked on a test stand with the server's effect stacking rules and skill data: the skill alone, together with a debuff on «P. Def.» in both orders of application, removal of each of the two, the buff ban, single and mass block together, a regular level and the last enchant level.

Target's «P. Def.», multiplier

What is on the target	Multiplier
Only «Mass Block Shield»	× 0.9
«Hex» and «Mass Block Shield», in any order	× 0.693
The same, «Hex» has ended	× 0.9
The same, «Mass Block Shield» removed	× 0.77
«Mass Block Shield» and «Block Shield»	× 0.9

# Specifics of our server

Before the fix of 10.10.2026 the 10% reduction took the slot of regular debuffs on «P. Def.» and counted as stronger than any of them: the block replaced a stronger effect, and under the block it did not land at all, although a success message came. Now the reduction is part of the block itself and does not compete with other effects.