MapleStory/Will

Level 235 or higher
Completed Esfera quests
Entry limitations
- Entry is allowed once daily per mode (except practice mode) if you did not take Will down.
- Clear count is allowed up till once per week, regardless of mode (except practice mode). Resets on Thursday midnight.
- Practice mode is allowed 5 times daily (shared across all the bosses). No rewards (EXP, items, monster collection chance, quests) can be earned even if the boss is killed in practice mode.

Boss Data

Overall time limit: 30 minutes
Level: 250 (Character Level 255 for 1.2x/1.1x damage dealt in Non-Reboot/Reboot world respectively)
Required Arcane Force: 760

Arcane Force	Damage dealt proportion
0~75	10%
76~227	30%
228~379	60%
380~531	70%
532~759	80%
760~835	100%
836~987	110%
988~1,139	130%
1,140 or higher	150%

Story Mode Overall HP: 21,000,000,000 (21 Billion)
- Phase 1: 8,400,000,000 (8.4 Billion)
- Phase 2: 6,300,000,000 (6.3 Billion)
- Phase 3: 6,300,000,000 (6.3 Billion)
Normal Mode Overall HP: 25,200,000,000,000 (25.2 Trillion)
- Phase 1: 8,400,000,000,000 (8.4 Trillion) / 4,200,000,000,000 (4.2 Trillion) per dimension
- Phase 2: 6,300,000,000,000 (6.3 Trillion)
- Phase 3: 10,500,000,000,000 (10.5 Trillion)
Hard Mode Overall HP: 126,000,000,000,000 (126 Trillion)
- Phase 1: 42,000,000,000,000 (42 Trillion) / 21,000,000,000,000 (21 Trillion) per dimension
- Phase 2: 31,500,000,000,000 (31.5 Trillion)
- Phase 3: 52,500,000,000,000 (52.5 Trillion)
DEF: 300% throughout the battle for all modes.
Resists all elements, including Physical.
Death Counts Allowed: 10 per person throughout the whole battle.
Skills used by Normal Will and Hard Will are the same, with some dealing more damage in Hard mode.
Damage percentages are based on your HP.

Skills

Moonlight can be obtained overtime for specific skill in each phase to help you. You gain more moonlight as you do not sustain damage. Regeneration rate is as follows:

Normal: 6% per 1.2 seconds after not taking damage for 1 second
Hard: 3% per 1.2 seconds after not taking damage for 2 seconds

Regeneration does not apply while dead, and if all webs fully cover the map in Phase 3 even when invincible.

All Phases

Summons spider legs around the map that will strike the area directly above or below it after 1 second (phase 2: 0.7 seconds), dealing 20% damage. Consecutive summons will always be in a different spot.
Summons spider eyes to shoot red darts to deal 10% damage and deduct 3% moonlight.
Summons blue spirits that follows you to deal 10% damage after 0.5 seconds if you touched it.

Phase 1

Moonlight skill: Consume 45% moonlight to change dimensions and nullifies damage taken for 3 seconds afterwards.

HP Blocks: 1%, 34%, 67% (HP will not go below these values if the team does not clear the test)

Strikes you for 20% damage.
Forcefully knocks back you and deal 20% damage and reverse arrow keys for 5 seconds affected by resistance.
Summons a eye wall to deal 90% damage to anyone in front of him.
Forcefully transports players across dimensions randomly approximately 50 seconds after the crack attack as described below.
Performs a screen crack attack at one of the dimensions to kill all players in that dimension 5 seconds after a dark red eye appears at 1 of the dimensions. (If a dark red eye appeared in the middle at your dimension 5 seconds before the attack, you are safe).
- 1st instance happens after 1 minute from start of fight (dark red eye appears when timer reaches 28:49), then every 2 minutes and 1 second after the screen crack is made, the dark red eye will reappear.
- HP of both dimensions and actual HP will be reset to the higher HP between the 2 dimensions.
HP Block Release Test (happens immediately for 20 seconds after screen crack attack if Will's HP drops to exactly 1% or 34% or 67%)
- Force transport everyone to one of the dimensions evenly and summons a dark eye on the ground (for solo mode, you will be transported to purple). Attack the dark eye sufficiently for it to spawn a yellow moonlight shield around it. You should be in the shield after 20 seconds from the start of test. Attack the eye to spawn dark debris or yellow bubbles on the opposite dimension.
- Dark debris will also fall and deal 60% damage if you touch it.
- Yellow bubbles will also fall and create the shield on both sides if you touch it.
- Another screen crack attack will be performed 20 seconds after the start of the test. The team passes the test (and HP block will be released) if half the team or less dies before the test, and nobody else dies during the test (if the member is dead before the test, he will be assumed to be alive when the test begins)
- Will will be immobilised for 10 seconds when the team passes the test. Don't waste your bind by binding immediately after the HP block is released.

Phase 2

Moonlight Skill: Consumes 30% moonlight to remove healing block for 7 seconds (5 seconds potion cooldown still applies). Cooldown 5 seconds.

HP Blocks: 1%, 51% (HP will not go below these values if the team does not clear the test)

Throughout the fight, block all healing effects including drain.
Summons web walls at the ends of the map to deal 90% damage in Normal Mode, 100% damage in Hard mode to anyone who touched it.
Rushes towards you to deal 10% damage.
Strikes you for 20% damage.
Forcefully knocks you back for 20% damage and reverse arrow keys for 5 seconds affected by resistance.
Spider in the mirror strikes you for 20% damage.
Spider in the mirror dashes towards you to knock you back, dealing 20% damage and reverse arrow keys for 5 seconds affected by resistance.
Summons a fat spider in the mirror to run towards you, dealing 20% damage.
HP Block Release Test (20 seconds once the HP requirement is met, cooldown 2 minutes)
- Spider legs will spawn from above and below.
- When there is a crack in the middle of the mirror, run and get hit by the spider legs, otherwise 90% damage will be dealt.
- When there is no crack in the middle of the mirror, dodge the spider legs as spider legs will deal 90% damage if you touch it.
- The team passes the test (and HP block will be released) if half the team or less dies before the test, and nobody else dies during the test (if the member is dead before the test, he will be assumed to be alive when the test begins)
- Will will be immobilised for 10 seconds when the team passes the test. Don't waste your bind by binding immediately after the HP block is released.

Phase 3

Moonlight Skill: Consume 20% moonlight to remove up to 2 spider webs upon touching the spider web and prevent the same web from respawning for 3 seconds, and becomes invincible to spider webs for 5 seconds. Cooldown 5 seconds.

Throughout the fight: Spider webs will start spawning at the map, starting from the edges. Spider webs deal 30% damage and seals your skills for 5 seconds affected by resistance if you touch it. Also obscures your view to make it harder to see the attacks.
Transforms into a spider and strikes you for 20% damage.
Transform into a spider and knocks you back to deal 20% damage and reverse arrow keys for 5 seconds affected by resistance.
Transform into a spider with yellow eyes and jumps down after 1 second to deal 90% damage in Normal mode, 100% damage in Hard mode to areas all around you approximately 0.2 seconds before this. Attack range is individualised.
Transform into a spider with white eyes and jumps down after 1 second to deal 90% damage in Normal mode, 100% damage in Hard mode to areas where you were approximately 0.2 seconds prior to this. Attack range is individualised.
Every 35 seconds, poisons 1 party member at random for 15 seconds. The properties of the poison is as such.
- Poisoned member deals 100% increased final damage.
- Poisoned member dies automatically if not dealing damage for 7 seconds
- Everyone else excluding Will, takes 44% damage every second for being near the poisoned player.
- If poisoned player dies, the poison will spread to that particular area, and another player will inherit the poison at random, and the duration will also be inherited by both the new poisoned player and the poison cloud area. (Poison cloud cannot be extinguished using Mist Explosion)

Rewards

Will drops the following items (definite drop. unless specified)

Glowing Soul Crystal (individual drop, meso values as follows, max 60 per character weekly. Triple value on Reboot servers)
- Normal Mode
  - 46,512,500 meso for solo
  - 23,256,250 meso for party of 2
  - 15,504,166 meso for party of 3
  - 11,628,125 meso for party of 4
  - 9,302,500 meso for party of 5
  - 7,752,083 meso for party of 6
- Hard Mode
  - 88,200,000 meso for solo
  - 44,100,000 meso for party of 2
  - 29,400,000 meso for party of 3
  - 22,050,000 meso for party of 4
  - 17,640,000 meso for party of 5
  - 14,700,000 meso for party of 6
16 Suspicious Cubes (individual drop)
Suspicious Additional Cubes (Master Craftsman Cubes for Reboot Worlds)
- 5 for Normal Mode
- 9 for Hard Mode
14 Medal of Honor (gives 100~200 Honor Points when picked)
40 Power Elixirs
Stone Cobweb Droplet (individual drop, with 10 Stone Origin Droplets you can obtain 1 Arachno Coin, which can be used to buy Arcane Umbra Equipment (Level 200 equipment) from Arachno Coin shop using 4 coins (Zero weapon Arcane Umbra set scroll), 16 coins (shoulderpad, hat, overall) or 24 coins (weapons, Zero Essence).)
- 1~2 for Normal mode
- 2~3 for Hard mode
Crusader Coins
Up to 3 Will's Soul Shard (individual drop, collect 10 to exchange for a random Will Soul)
(Hard mode only) Arcane Umbra Hats, Shoulderpads, Overalls, Weapons (low chance, unaffected by drop rate increasing effects including Reboot world passive)
(Hard mode only) Cursed Blue/Red/Green/Yellow Spellbooks (low drop rate, Level 160 pocket item, 20 INT/STR/LUK/DEX respectively, 10 for the other 3 stats each, 100 HP, 100 MP, 10 ATT, part of Pitched/Black Boss Accessory Set)
(Hard mode only) Mirror World Nodestone (individual drop, tradeable, provides 1 Level 1 Arachnid Reflection node)

Arachno Coin Shop

You can use the Arachno Coins that are exchanged with an NPC to buy Arcane Umbra Equipment. Not all equipment in the set is sold.

Arcane Umbra Lucky Item Scroll 100% (4 Arachno Coins, include Lapis/Lazuli into the Arcane Umbra Warrior set.)
Arcane Umbra Essence (24 Arachno Coins, needed to upgrade Lapis/Lazuli Type 7/8 to Type 9)
Arcane Umbra Weapons (24 Arachno Coins, 100 Primary and Secondary Stats, 1.725 times the ATT value of Fafnir Weapons, 20% ignore DEF instead of 10%, 8 upgrades)
Arcane Umbra Hats (16 Arachno Coins, 65 Primary and Secondary Stats, 7 ATT, 600 DEF, 15% Ignore DEF, 11 upgrades)
Arcane Umbra Overalls (16 Arachno Coins, 85 Primary and Secondary Stats, 9 ATT, 500 DEF, 12 upgrades)
Arcane Umbra Shoulderpads (16 Arachno Coins, 35 All Stats, 20 ATT, 300 DEF, 1 upgrade)

Set bonuses