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Unless stated otherwise, everything here is Diablo II: Resurrected build 3.3.93847, Reign of the Warlock.
D2R.ORGUnless stated otherwise, everything here is Diablo II: Resurrected build 3.3.93847, Reign of the Warlock.
Assassin skill · level 6Not against playersIncreases attack and movement speed for a period of time.
Burst of Speed is the Assassin's speed buff (Shadow Disciplines, level 6, requires Claw Mastery; it unlocks Fade). Called "Quickness" in the game's tables, it is a state on the Assassin herself that raises her run/walk speed and her attack speed for minutes at a time. The numbers that decide it are the two bonuses at level 20, +61% run/walk and +52% attack speed, and the fact that both climb a diminishing curve that only a great many levels push to their caps of +70% and +60%.
Burst of Speed by level, from skills.txt — past 20 from +skills| Level | Duration | Run/Walk Speed: + | Attack Speed: + |
|---|---|---|---|
| 1 | 120 seconds | 23% | 21% |
| 2 | 132 seconds | 29% | 27% |
| 3 | 144 seconds | 34% | 31% |
| 4 | 156 seconds | 39% | 34% |
| 5 | 168 seconds | 42% | 37% |
| 6 | 180 seconds | 45% | 39% |
| 7 | 192 seconds | 47% | 41% |
| 8 | 204 seconds | 49% | 42% |
| 9 | 216 seconds | 51% | 44% |
| 10 | 228 seconds | 52% | 45% |
| 11 | 240 seconds | 54% | 46% |
| 12 | 252 seconds | 55% | 47% |
| 13 | 264 seconds | 56% | 48% |
| 14 | 276 seconds | 57% | 49% |
| 15 | 288 seconds | 57% | 50% |
| 16 | 300 seconds | 59% | 51% |
| 17 | 312 seconds | 59% | 51% |
| 18 | 324 seconds | 60% | 51% |
| 19 | 336 seconds | 60% | 52% |
| 20 | 348 seconds | 61% | 52% |
| 21 | 360 seconds | 61% | 53% |
| 22 | 372 seconds | 62% | 53% |
| 23 | 384 seconds | 62% | 54% |
| 24 | 396 seconds | 63% | 54% |
| 25 | 408 seconds | 63% | 54% |
| 26 | 420 seconds | 63% | 55% |
| 27 | 432 seconds | 64% | 55% |
| 28 | 444 seconds | 64% | 55% |
| 29 | 456 seconds | 65% | 55% |
| 30 | 468 seconds | 65% | 55% |
Duration is Param5 (3,000 frames) plus Param6 (300) a level, at 25 frames a second: 120 seconds at level 1, +12 a level, 348 at level 20 and 468 at level 30. Run/walk runs from Param1 (15%) toward Param2 (70%) on the game's diminishing curve (aurastatcalc1 dm12): +23% at level 1, +42% at 5, +52% at 10, +57% at 15, +61% at level 20, +65% at 30; the Basin's table shows +70% only at level 60. Attack speed runs from Param3 (15%) toward Param4 (60%) the same way (dm34): +21% at level 1, +37% at 5, +45% at 10, +50% at 15, +52% at level 20, +55% at 30. All three read lvl, so +skills count. Mana is a flat 10 at every level, so it is left out of the table.
Burst of Speed is an aura state ("quickness") on the caster alone, and the row allows it in town (InTown 1). Its two stats are the ones your gear gives: the run/walk bonus is the same stat as Faster Run/Walk and the attack speed bonus the same as Increased Attack Speed, so they add to those from items in the usual way; what a given total of attack speed buys in frames is on Attack Speed.
The Basin's page says Burst of Speed and Fade cannot be active at the same time, and that casting either again before the other expires always overrides it, even with a lower-level cast.
The Basin's page also notes it is the skill a Mania weapon casts on striking in D2R.
No synergies: nothing raises Burst of Speed and it raises nothing. All three lines read lvl, so +skills from items and the Shadow Disciplines tab count in full — a +3 tab takes a one-point buff from +23% run/walk to +39% and from +21% to +34% attack speed, the Basin's table shows, for the same 10 mana.
Burst of Speed is a buff on the Assassin and never touches a player; the speed it gives applies in a duel exactly as it does against monsters.
Written from the game's tables (build 3.3.93847) and the cited pages; a per-level table is computed from skills.txt and skilldesc.txt by the same evaluator the skill pages use. A “legacy rule” is a published engine rule no table proves; a “game table” is read from the table named. · Report incorrect data
Mechanics · Skill mechanics · Assassin