Age of Ymir · Systems

Blight Culvert

Delve into the grotesque ritual of a mutated Golden Thief Bug, threatening the inhabitants near Prontera. This dream entity governs the foul sewers and, if left unchecked, could render the real GTB in our world immortal. To summon the boss, parties must destroy all Blight Bug Eggs (count scales by difficulty: 3 Easy → 12 Torment). There’s a 1 in 4 chance that Worldbreaker Bug Clones (3×) will spawn; seek and destroy the Prime Blighted Egg to kill all clones. During the boss fight, keep Rift Essence (eggs) below 10 or the Worldbreaker gains a permanent shield.

Level 40+Party InstanceParadox Shard Focused

This instance can be repeated.

This Pulse Rift has no cooldown period.

Blight Culvert Instance

How to enter

Blight Culvert is a Minor Pulse Rift. Entry is made by using an Echo Rift Stone—the stone opens a random Minor Pulse Rift, which may be this instance.

Only the party leader can use the stone successfully.
Solo players must still create a party before using the stone.
Only party members present when the stone is used will have the instance created for them.

Rift Stones drop from monsters globally; see Obtaining Rift Stones for drop rates.

Requirements & Rewards

Requirements	Reward Incentives
Base Level: 90+	Chronocites (scales by difficulty)
Party: 1+	Random Material & Equipment Drops
Time Limit: 2 hours	Instance Points and EXP Bonuses

Pulse Rift Walkthrough

Instance Information

Instance Cooldown Quest Name: Desolation of Culvert Fatigue
Instance Time Limit: 2 hours
Map Name: 1@prtc (Prontera Culvert)

Instance Overview

Ymir instructs you to destroy all Blight Bug Eggs of the Worldbreaker (count varies by difficulty: 3 Easy, 5 Veteran, 7 Nightmare, 9 Hell, 12 Torment). They were the cause of humanity’s extinction in this universe. A 1 in 4 chance spawns 3 Worldbreaker Bug Clones and a Prime Blighted Egg—destroy the egg to kill all clones. Once all eggs are cleared, the Worldbreaker Bug appears at the center; you have 25 seconds to enter the battle zone before poison gates seal the area.

Blight Bug Egg

Blight Ice Bug

Blight Fire Bug

Blight Filth Bug

Blight Wild Bug

Blight Immortal Bug

Step 1 - Enter the Rift

Form a party (or create one solo). Entrance to the rift is conjured via an Echo Rift Stone—for more information, see Rift Access. Select Blight Culvert from the zone options. Difficulty is assigned automatically; each difficulty increases monster stats and rewards. Only the party leader can initiate. You must be at least level 90. Enter the instance when ready.

Step 2 - Destroy Blight Bug Eggs

Ymir’s Voice announces that you must destroy all Blight Bug Eggs of the Worldbreaker (the number depends on difficulty: 3 Easy, 5 Veteran, 7 Nightmare, 9 Hell, 12 Torment). They look like eggs and were the cause of humanity’s extinction in this universe. Hunt the eggs across the map; when you kill one, it spawns 1–2 Blighted Bug (Blight Wild Bug, mob 30004). The area also has elite rift mobs: Blight Ice Bug, Blight Fire Bug, Blight Filth Bug, and Blight Wild Bug. Normal culvert mobs (e.g. Familiar, Tarou, Spore, Plankton) may also appear. Ymir reports remaining egg count as you clear them.

Step 3 - Worldbreaker Bug Clones (1 in 4 chance)

There’s a 1 in 4 chance at the start that Ymir will warn: the Worldbreaker has already multiplied, and weaker Worldbreaker Bug Clones (mob 30006, 3×) will roam alongside the eggs. A Prime Blighted Egg (30002) also appears—Ymir says to destroy it to destroy all clones. When you kill the Prime Blighted Egg, Ymir announces: “We have killed the Blighted Rift Egg! All Worldbreaker clones are dead!” Viewpoints mark the clone and egg locations.

Step 4 - Worldbreaker Bug Arrives

Once all Blight Bug Eggs are destroyed, Ymir uses spatial prowess to confirm they’re gone, then warns the Worldbreaker will come at the center. A viewpoint marks the center. The Worldbreaker Bug (30000) spawns there. Ymir announces: you have 25 seconds to enter the battle zone. After that, Poison Mist gates (Blight mob 2536) seal the area. Enter before the gates close to engage the boss.

Step 5 - Rift Essence & Boss Shield

During the boss fight, Rift Essence (mob 30002) spawn near the Worldbreaker. The game shows “Number of Rift Essence present: X”. If the count reaches 10, the boss gains a permanent protective shield (greatly increased ATK, DEF, MDEF, HIT, FLEE) for the rest of the fight—Ymir announces: “The Worldbreaker now has a protective shield made from the rift itself…” Assign a dedicated player to clear Rift Essence so the count never hits 10.

Step 6 - Poison Mists & Boss Healing

More Rift Essence on the field causes more Poison Mist (Blight, mob 2536) spawns that constrict the arena. The boss uses Highness Heal at higher strength as Rift Essence count rises: level 1 when ≤3 eggs, level 3 when ≤6, level 10 when ≤9, and level 20 when 10 eggs (at which point the permanent shield also applies). When Rift Essence count drops to 0, Ymir says “The blight made by the Worldbreaker is gone!” and all poison mists are removed. Keep clearing Rift Essence to reduce healing and open the arena.

Step 7 - Defeat Worldbreaker Bug

Defeat the Worldbreaker Bug to complete the instance. Ymir announces: “We have destroyed the Worldbreaker and avenged humanity from this universe!” Ymir’s Projection appears—talk to her to either stay and explore or choose Let’s go! to warp back to Aurelia (192, 153).

Featured Monsters

Monster Information

Monster	Level	HP	Def	Mdef	Size	Element	Race
Blight Bug Egg	95	7	100	100	Small	Neutral 1	Insect
Blight Ice Bug	95	28,000	50	100	Small	Water 3	Insect
Blight Fire Bug	95	28,000	100	50	Small	Fire 3	Insect
Blight Filth Bug	95	33,000	100	100	Small	Poison 3	Insect
Blight Wild Bug	95	35,000	50	50	Medium	Dark 1	Insect
Blight Immortal Bug	99	95,000	100	100	Small	Poison 3	Insect
Worldbreaker Bug	95	1,500,000	100	150	Large	Dark 4	Insect

Difficulty Modes

Each run assigns a random difficulty mode that scales monster strength, EXP, and rewards. Chronocites are guaranteed on completion; bonus completion drops are rolled per character. For the full rules behind Rift randomization and difficulty scaling, see Rift Mechanics.

Randomization Settings

Difficulty	Monster Boost	EXP Bonus	Reward Chronocites
Easy	No Boost	x1	5 Chronocites
Veteran	+50% Stats	x1.5	10 Chronocites
Nightmare	+100% Stats	x2	15 Chronocites
Hell	+150% Stats	x2.5	20 Chronocites
Torment	+200% Stats	x3	25 Chronocites

Completion Reward Odds (per character)

Difficulty	Blacksmith Blessing (x1)	Blacksmith Blessing (x3)	Entropy Codex (x1)	Entropy Codex (x5)
Easy	15%	5%	5%	2%
Veteran	20%	10%	8%	5%
Nightmare	25%	15%	10%	7%
Hell	30%	20%	15%	12%
Torment	35%	25%	20%	17%

Party Rewards

Rewards in this rift come from two layers:

Completion rewards (per character): party members online and on the instance map receive guaranteed Chronocites and get completion roll chances (Entropy Codex / Blacksmith Blessing).
Rift boss drops: while clearing mobs, Paradox Shards can drop via two independent rolls:
- Bundle roll (5× Paradox Shard): 0.2% for the killer; 0.1% for other party members.
- Single roll (1× Paradox Shard): 1% / 3% / 5% / 7.5% / 10% (Easy → Torment). On Torment, party sharing is enabled at 50% of the killer chance.

For the global reward rules that apply across all Pulse Rifts, see Rift Rewards.

Reward Items

Item	Type	Description
Chronocite	Currency	Used to buy items from the Pulse Rift Shop Manager.
Paradox Shard	Currency	Core currency dropped from Rifts and used to enchant end‑game gear.
Entropy Codex	Material	A mysterious tome from Rift Bosses that distorts space and time, letting you call forth a powerful Field Boss via the Pulse Rift.
Blacksmith Blessing	Material	Prevents downgrade on refine fail.

Strategy Tips

Tips & Strategies

Assign one player as a dedicated egg-killer during the boss fight.
Avoid allowing the egg count to reach 10.
If your party has strong DPS, maintaining fewer than 4 eggs may be manageable.
If Worldbreaker Bug Clones (mob 30006) spawn, seek the Prime Blighted Egg to kill all three at once. The clones have high attack and will pursue anyone they aggro.

Server Rules