Read this before you commit: things you cannot undo
Every action on this server that officially destroys, overwrites, randomises, expires, or forfeits something — ranked by cost. Each row links to the official source and the full explanation. Check it before you click.
Epic-to-legendary fashion synthesis (always feeds 2 epics + 1 legendary scissors)
Official text states materials vanish every time, success or fail alike; the 80% non-legendary outcome returns a random same-slot epic, not necessarily either piece you fed in
Wearing mixed-rarity fashion pieces (one legendary inside an epic set)
Mixing in even one higher-rarity piece kills the otherwise-complete epic set's entire set bonus
Buying a bundle or item with M-coin / Deca / shop points
Every official notice states purchases made with in-game currency cannot be cancelled — no refund path exists
Rune ascension (3 runes fused into 1 higher grade) (Traditional Chinese)
On failure, the runes in slots 2 and 3 are destroyed — only slot 1 survives
Fashion ascension (3 same-slot, same-grade pieces) (Traditional Chinese)
The main-material slot is always safely returned on failure; the other 2 pieces can be destroyed or cursed
Identifying a piece of gear (Traditional Chinese)
Once identified, the item can never be traded again — even if it was tradeable before
Re-imprinting a new rune onto already-imprinted gear (Traditional Chinese)
The old rune breaks down into fragments + spirit traces (partial recovery), but any accumulated enhancement points on that gear reset to zero
Applying a new enchant scroll to already-enchanted gear (Traditional Chinese)
The old enchant is replaced and gone no matter what it was — and dismantling the gear never returns the scroll
Choosing the wrong gear for the "material" slot in Performance Improvement (Traditional Chinese)
Whatever enchant was on the material piece is not kept — it is simply destroyed
Dying inside the Wraith Tower (Traditional Chinese)
Revival items simply do not work inside the tower, no matter how many you bring
Leaving a maintenance-compensation mail unopened
The claim deadline and the mail-deletion date are two different dates — checking only one leads people to think they have more time than they do
Holding a silver alloy ingot obtained through the barter exchange (Traditional Chinese)
The 8/26 notice said it was "expected" to be recalled from inventory, storage and mail at the 9/9 maintenance; the 9/9 notice and update log never mentioned the recall again and instead listed the same barter (Colhen blacksmith: 2 special steel ingots → 1 silver alloy ingot) as new. No official text confirms the recall happened
The legendary-set robe's "trend fashion" bonus
Expires 60 days after you obtain it — only this robe bonus ends, the set effect itself stays
Selling an item through the market (Traditional Chinese)
Every item trades exactly once — once it sells, it can never be relisted
Discarding (not dismantling) a class emblem with an imprinted rune (Traditional Chinese)
The imprinted rune is destroyed along with it — only dismantling returns the rune intact
Switching to a class that uses a different weapon type (Traditional Chinese)
Enhancement points on the old weapon cannot transfer to the new weapon type — you re-grind from scratch
Failing a Wraith Tower attempt (Traditional Chinese)
Success or failure both spend 1 of your 20 daily attempts, resetting only at 06:00 the next day
Clearing a team dungeon's Beginner mode first (Traditional Chinese)
Beginner and Hard share one weekly clear reward — claim Beginner first and Hard is locked out for that week
Holding onto event tokens past the exchange shop's close (Traditional Chinese)
Even while the event itself is still live, the moment the shop closes the tokens become unusable
Season handover (from KR precedent — TW's own handover date is not yet announced) (Traditional Chinese)
Old runes can be downgraded two rarity tiers, and the previous season's pass and tokens mostly reset to zero
A pet used as fusion material (Traditional Chinese)
Consumed in the fusion — only the skill and rarity-cap inheritance carries forward
Delivering materials toward guild-ship construction (KR mechanic — TW's feature is currently disabled) (Traditional Chinese)
When KR cut the material requirement, materials already delivered under the old quota were not refunded
Holding night-market event stamps until the event ends to cash out
After close, each stamp cashes out for 100 gold; spent in-event on gold bars it's worth 400 — hoarding to the end throws away 75% of the value
Full-bundle "package points" and unactivated season-pass tickets
Package points are deleted at the 9/9 maintenance with no carryover; unactivated pass tickets are destroyed the same way at season end
Selling to an NPC or discarding an item (Traditional Chinese)
Within 1 hour and up to 30 items, the repurchase tab returns it at the original price — past either limit (oldest purged first) it is permanently gone
Cancelling a market listing mid-sale (Traditional Chinese)
The item itself is returned, but the listing deposit is forfeited every time, no exceptions
A tower floor you've already cleared (Traditional Chinese)
Cannot be re-run to claim the first-clear reward again — it is one-time only
Reviving after a death inside a dungeon (Traditional Chinese)
Revives draw from one shared party pool (20/10/5 by difficulty), not a per-player allowance
Daily/weekly task quota before the 9/9 update (Traditional Chinese)
These tasks get replaced at the update — any unclaimed quota is not carried forward
The daily cap on new-dungeon exchange materials (Traditional Chinese)
A fixed amount per day, with no catch-up mechanism — the only way to have enough is to stockpile early
A pet's innate (role-defining) skill (Traditional Chinese)
Locked in the moment you obtain the pet — no method afterward can reroll or change it
Rerolling a gem's skill tag with the engraver (Traditional Chinese)
The old tag combination is randomly overwritten and gone — Nexon has never published the odds
Switching classes or reincarnating a character (Traditional Chinese)
Some class-specific progress needs re-earning under the published rules — see the full rule table
Holding more than 100 silver coins (the soft cap)
Auto-regen (+1 every 30 min) stops the moment you're over 100 — sitting on a surplus quietly costs you dungeon runs
The daily free hunting-ground exploration count
Unused ones simply vanish at 06:00 the next day — only the separate weekly pool (max 7) actually banks
KR's Lv85+ paid tag-swap between two gems (TW's level cap hasn't reached the unlock yet) (Traditional Chinese)
Every swap costs the fee again — it is not a one-time unlock
Abandoning a dungeon or hunting ground after entering
Full refund of the entry silver only if you leave immediately — abandoning after progress gives a partial refund (hunting grounds prorate by completed side-objectives)
Epic-to-legendary fashion synthesis (always feeds 2 epics + 1 legendary scissors)
Official text states materials vanish every time, success or fail alike; the 80% non-legendary outcome returns a random same-slot epic, not necessarily either piece you fed in
Cost 5/5 FashionWearing mixed-rarity fashion pieces (one legendary inside an epic set)
Mixing in even one higher-rarity piece kills the otherwise-complete epic set's entire set bonus
Cost 5/5 Cash shopBuying a bundle or item with M-coin / Deca / shop points
Every official notice states purchases made with in-game currency cannot be cancelled — no refund path exists
Cost 5/5 Enhance / rune / enchantRune ascension (3 runes fused into 1 higher grade) (Traditional Chinese)
On failure, the runes in slots 2 and 3 are destroyed — only slot 1 survives
Cost 4/5 FashionFashion ascension (3 same-slot, same-grade pieces) (Traditional Chinese)
The main-material slot is always safely returned on failure; the other 2 pieces can be destroyed or cursed
Cost 4/5 MarketIdentifying a piece of gear (Traditional Chinese)
Once identified, the item can never be traded again — even if it was tradeable before
Cost 4/5 Enhance / rune / enchantRe-imprinting a new rune onto already-imprinted gear (Traditional Chinese)
The old rune breaks down into fragments + spirit traces (partial recovery), but any accumulated enhancement points on that gear reset to zero
Cost 4/5 Enhance / rune / enchantApplying a new enchant scroll to already-enchanted gear (Traditional Chinese)
The old enchant is replaced and gone no matter what it was — and dismantling the gear never returns the scroll
Cost 4/5 Enhance / rune / enchantChoosing the wrong gear for the "material" slot in Performance Improvement (Traditional Chinese)
Whatever enchant was on the material piece is not kept — it is simply destroyed
Cost 4/5 Tower / dungeonDying inside the Wraith Tower (Traditional Chinese)
Revival items simply do not work inside the tower, no matter how many you bring
Cost 4/5 Time-boxedLeaving a maintenance-compensation mail unopened
The claim deadline and the mail-deletion date are two different dates — checking only one leads people to think they have more time than they do
Cost 4/5 Time-boxedHolding a silver alloy ingot obtained through the barter exchange (Traditional Chinese)
The 8/26 notice said it was "expected" to be recalled from inventory, storage and mail at the 9/9 maintenance; the 9/9 notice and update log never mentioned the recall again and instead listed the same barter (Colhen blacksmith: 2 special steel ingots → 1 silver alloy ingot) as new. No official text confirms the recall happened
Cost 3/5 FashionThe legendary-set robe's "trend fashion" bonus
Expires 60 days after you obtain it — only this robe bonus ends, the set effect itself stays
Cost 3/5 MarketSelling an item through the market (Traditional Chinese)
Every item trades exactly once — once it sells, it can never be relisted
Cost 3/5 Enhance / rune / enchantDiscarding (not dismantling) a class emblem with an imprinted rune (Traditional Chinese)
The imprinted rune is destroyed along with it — only dismantling returns the rune intact
Cost 3/5 Enhance / rune / enchantSwitching to a class that uses a different weapon type (Traditional Chinese)
Enhancement points on the old weapon cannot transfer to the new weapon type — you re-grind from scratch
Cost 3/5 Tower / dungeonFailing a Wraith Tower attempt (Traditional Chinese)
Success or failure both spend 1 of your 20 daily attempts, resetting only at 06:00 the next day
Cost 3/5 Tower / dungeonClearing a team dungeon's Beginner mode first (Traditional Chinese)
Beginner and Hard share one weekly clear reward — claim Beginner first and Hard is locked out for that week
Cost 3/5 Time-boxedHolding onto event tokens past the exchange shop's close (Traditional Chinese)
Even while the event itself is still live, the moment the shop closes the tokens become unusable
Cost 3/5 Time-boxedSeason handover (from KR precedent — TW's own handover date is not yet announced) (Traditional Chinese)
Old runes can be downgraded two rarity tiers, and the previous season's pass and tokens mostly reset to zero
Cost 3/5 PetsA pet used as fusion material (Traditional Chinese)
Consumed in the fusion — only the skill and rarity-cap inheritance carries forward
Cost 3/5 GuildDelivering materials toward guild-ship construction (KR mechanic — TW's feature is currently disabled) (Traditional Chinese)
When KR cut the material requirement, materials already delivered under the old quota were not refunded
Cost 3/5 Tokens / capsHolding night-market event stamps until the event ends to cash out
After close, each stamp cashes out for 100 gold; spent in-event on gold bars it's worth 400 — hoarding to the end throws away 75% of the value
Cost 3/5 Tokens / capsFull-bundle "package points" and unactivated season-pass tickets
Package points are deleted at the 9/9 maintenance with no carryover; unactivated pass tickets are destroyed the same way at season end
Cost 2/5 MarketSelling to an NPC or discarding an item (Traditional Chinese)
Within 1 hour and up to 30 items, the repurchase tab returns it at the original price — past either limit (oldest purged first) it is permanently gone
Cost 2/5 MarketCancelling a market listing mid-sale (Traditional Chinese)
The item itself is returned, but the listing deposit is forfeited every time, no exceptions
Cost 2/5 Tower / dungeonA tower floor you've already cleared (Traditional Chinese)
Cannot be re-run to claim the first-clear reward again — it is one-time only
Cost 2/5 Tower / dungeonReviving after a death inside a dungeon (Traditional Chinese)
Revives draw from one shared party pool (20/10/5 by difficulty), not a per-player allowance
Cost 2/5 Time-boxedDaily/weekly task quota before the 9/9 update (Traditional Chinese)
These tasks get replaced at the update — any unclaimed quota is not carried forward
Cost 2/5 Time-boxedThe daily cap on new-dungeon exchange materials (Traditional Chinese)
A fixed amount per day, with no catch-up mechanism — the only way to have enough is to stockpile early
Cost 2/5 PetsA pet's innate (role-defining) skill (Traditional Chinese)
Locked in the moment you obtain the pet — no method afterward can reroll or change it
Cost 2/5 GemsRerolling a gem's skill tag with the engraver (Traditional Chinese)
The old tag combination is randomly overwritten and gone — Nexon has never published the odds
Cost 2/5 Class switch / rebirthSwitching classes or reincarnating a character (Traditional Chinese)
Some class-specific progress needs re-earning under the published rules — see the full rule table
Cost 2/5 Tokens / capsHolding more than 100 silver coins (the soft cap)
Auto-regen (+1 every 30 min) stops the moment you're over 100 — sitting on a surplus quietly costs you dungeon runs
Cost 2/5 Tokens / capsThe daily free hunting-ground exploration count
Unused ones simply vanish at 06:00 the next day — only the separate weekly pool (max 7) actually banks
Cost 1/5 GemsKR's Lv85+ paid tag-swap between two gems (TW's level cap hasn't reached the unlock yet) (Traditional Chinese)
Every swap costs the fee again — it is not a one-time unlock
Cost 1/5 Tokens / capsAbandoning a dungeon or hunting ground after entering
Full refund of the entry silver only if you leave immediately — abandoning after progress gives a partial refund (hunting grounds prorate by completed side-objectives)
Every row carries an official source or a community-observation flag. "Community" means Nexon has not published that exact rule in writing, though the numbers involved usually still trace to an official source.