Mortal Blow (CoT2) - MapleStory Classic World Ranger skill

Read from the Closed Online Test 2 client, pulled 12 August 2026.

CoT2: From Closed Online Test 2 (Beta 2). Not in the Public Release; kept here as a record.The Public Release has no 3rd job. Mortal Blow is kept from Closed Online Test 2 with every rank as the test had it, so what this page says is the test’s, not the live game’s. What the release removed

Enables shooting arrows at a very close range with a certain success rate. May instantly kill a monster with a single shot, but Bosses cannot be instantly killed.

Available the moment you advance.

Every rank1 target

Spends: 1; arrow a cast

Rank by rank

20 ranks

Rank 20 / 20maxed

90% success rate, Damage 200%; Kills the monster with HP at 50% or lower at 20% success rate

rolls: 1264-1417
chance: 90%

What ranking it up buys

One row per number that moves rank to rank: what it is at rank 1, what it is at the last rank, and the difference. The track marks every rank at its own place between the two, so a skill that does most of its work in the first few ranks looks like one - and several do.

Every figure comes off the client’s own level rows rather than out of the tooltip sentence, so a rank the client is silent about is a gap here rather than a guess.

Damage120%200%+80% over 20 ranks

Chance50%90%+40% over 20 ranks

Monsters1the same at all 20 ranks - the points here buy something else, or nothing

Hits1the same at all 20 ranks - the points here buy something else, or nothing

Arrows a cast1the same at all 20 ranks - the points here buy something else, or nothing

What it rolls

A damage number whose inputs are hidden is worse than no number, so all of them are on the page. Level 70, which is this job’s own unlock level. 217 DEX, which is every base point the level allows that is not being spent meeting the weapon. 145 DEX to hold a Red Hinkel. 90 weapon attack, and mastery 10 from this chain's own mastery skill.

No equipment beyond the weapon, no buffs, no potions and no monster on the other end: this is the roll before anything is done to it. What the game prints also depends on the level gap to what you hit and on its defence, and neither is in this figure.

Rank 1

758-850

120% of the roll

Rank 20

1264-1417

200% of the roll

high = skill% x (1.0 + (DEX x mult + DEX) / 100 + att / 50) x weapon attack

low = skill% x (0.8 + (DEX x mult x mastery + DEX) / 100 + att / 50) x weapon attack

How often you swing

Every weapon carries a stage from 2 (fastest) to 8 (slowest), and the label printed beside it is not reversible: “Fast” is stage 4 or 5, so the stage is what a booster has to be applied to.

What the export does not carry is milliseconds per stage. So this says which weapon swings sooner than which, and cannot say how long either takes - which is also why damage per second is not a number this site prints anywhere.

Best rung at level 70	Bare	No booster
Red HinkelBow	Normal (6)	-

This job has no , so the weapon’s own stage is the whole story.

Weapon multipliers

The multiplier is the weapon’s, not the skill’s, and it is the largest single term in the roll.

Weapon	Swing	Stab
Bow	1	1

A ranged weapon carries one multiplier and one action, so there is no swing-or-stab coin flip in the numbers. Firing one at something standing next to you is the exception, and it is punished: the stat divisor goes from 100 to 300 and the attack divisor from 50 to 150.

Closed Online Test 2 to Public Release

Each diff was generated on its own date and the rest of the snapshot was synced later, so a change made between the two would not appear here. Where they disagree, the rank rows above are the newer read.

CoT2: From Closed Online Test 2 (Beta 2). Not in the Public Release; kept here as a record.Removed in the Public Release; this page shows the skill as Closed Online Test 2 had it.

Closed Online Test 1 to Closed Online Test 2

Mortal Blow is new in Closed Online Test 2. It did not exist in Closed Online Test 1, so there is nothing to compare it against.

The rest of the Ranger book

How long a cast takes. The client ships a frame timing for every action, but the game scales an action by the weapon’s attack speed and the rule that does it is not in the export. So nothing here is milliseconds of real cast time, and nothing on this site prints damage per second.

How the search steps. The box says what area a cast catches, and three things about how it is searched are on no row anywhere: where the search starts, relative to your feet; the step it moves in, if it steps rather than sweeps; whether a wall or a platform edge stops it. Drawing them would mean taking somebody else’s reverse engineering of the client and presenting it as ours.

Whether it can be cast in the air, and what a monster’s defence does to the roll. No cast-position column exists, and the roll above is the number before anything on the other end is applied.

And all of it is Closed Online Test 2's: the Public Release does not have this skill.