• Fanatic Swing is a modification of Zeal. Zeal has a parameter of 100% Rollback, while Fanatic Swing is given 50% Rollback. This article is based on an assumption that 50% Rollback makes the next swing start 50% faster. (Any correction would be appreciated.) Correction: Fanatic Swing has 60% rollback, not 50%. That makes the swings after the first approximately 40% faster, though of course, the actual amount will depend on how D2 rounds that percentage in response to the acutal number of frames before the action frame in the Sorceress attack animation.
  • It also appears that these tables are based on the assumption that the rollback will accellerate the inital attack and the final recovery animation as well. From what I (Verbatim) have read, the initial attack and final recovery animation are completely unaffected by reduced rollback, which means those animations should be exactly the same as those listed in the Zeal section. Please ignore the inital and final attack information listed under Fanatic Swing. The inital attack should be exactly the same as that of Zeal. The final attack begins with a shortened F-U attack (starting 40% of the way through the initial portion of the attack animation), and ends with a recovery animation which is the same for both Zeal and Fanatic Swing. In essense, both Fanatic Swing and Zeal consist of a normal attack with up to four shortened attack swings sandwitched in the middle between the initial normal attack striking motion, and the final normal attack recovery motion. With Zeal, the benefit is skipping the recovery animation after the attack four times. With Fanatic Swing, those shortened attacks in the middle are sped up by an additional 40%.
  • Since the IAS tables here are made based on the faulty assumption of 50% rollback, they are certainly inaccurate, and one should expect more IAS than listed to be necessary to reach each breakpont with Fanatic Swing. It is also possible that the maximum speed for FS listed here is faster than the actual maximum possible speed.
  • It would be wise to gain more IAS for FS than the calculations here suggest, because the numbers here are too optimistic. The Sorceress Zeal speeds from the Amazon Basin, however, should be accurate.

Sorceress Zeal Speed

  • This table is the Sorceress Zeal speed quoted from The Amazon Basin Technical Discussion Forum.
  • EIAS is effective IAS the character has.
  • 1st Swing is the frame of the first swing.
  • End Swing is the frame of the last swing.
  • F-U (follow-up) Swing is the frame of each swing between the first and the last.
  • The End Swing is especially longer because it contains the animation to the neutral position (the ending animation).
  • For example, if a Sorceress has no IAS and swings 5 times with oskill Zeal, the whole attack sequence takes 10+12+12+12+19=65 frames.
Sorceress Zeal Speed
with 1H Swing Weapons
EIAS1st SwingF-U SwingEnd Swing
-20131625
-191524
-161223
-1414
-1222
-81121
-713
-420
0101219
618
1011
12917
1816
2110
25815
34914
43713
508
5412
67611
727

Sorceress Fanatic Swing Speed

  • Assuming 50% Rollback makes the next swing start 50% faster, Fanatic Swing will have 50% less 1st Swing and F-U Swing. End Swing won't be affected because there comes no next swing until the whole sequence ends.
  • So the table of Fanatic Swing speed will be like this. (Each 1st Swing and F-U Swing is halved and rounded up.)
Sorceress Fanatic Swing Speed
with 1H Swing Weapons
EIAS1st SwingF-U SwingEnd Swing
-207825
-16623
-147
-1222
-821
-420
05619
618
1217
1816
215
25415
3414
4313
504
5412
67311
  • With 50% EIAS, the sequence takes 4+4+4+4+12=28 frames (So-called 4 frame Zeal), not bad breakpoint to aim. With 54% EIAS the sequence gets 1 frame shorter. With 67% EIAS, the sequence gets 2 more frames shorter.

Calculating the EIAS

  • Since no weapon speed calculator in the world supports Fanatic Swing, we have to calculate the EIAS for ourselves.
  • Well, now we know we need 67% EIAS for the fastest breakpoint. Then how much IAS do we need?
  • First, let's check the weapon speed (WSM) at the ES Database. For example, if you use a Long Sword, the WSM is [-10]. WSM is EIAS, but a negative value. So WSM [-10] is equal to 10% EIAS. You can subtract 10% from 67%. The rest EIAS we need is 57%.
  • Next, if you have Fanaticism and/or Annihilation (from eqipment or mercenary), let's check it's IAS bonus. The IAS bonus from skills is EIAS, too. If your aura grants 15% skill IAS, you can subtract 15% from 57%. The rest EIAS we need is 42%.
  • Ok, it's time to look up the table. It says 42% EIAS is equal to 65% IAS, so you need 65% IAS from equipments.
EIAS/IAS Conversion Table
EIASIASEIASIASEIASIASEIASIAS
1231426112591377
2332446212992395
3433466313393414
4534486413894434
5635506514295456
6736526614796480
7837546715297507
8938566815798535
91039586916399566
1011406070168100600
1113416371174101638
1214426572180102680
1315436873187103728
1416447074194104780
1518457275200105840
1619467576208106909
1720477877215107988
18224880782231081080
19234983792321091190
20245086802401101320
21265189812501111480
22275292822591121680
23295395832701131938
24305499842801142280
253255102852921152760
263456105863041163480
273557109873171174680
283758113883301187080
2939591178934511914280
30406012090360120inf

Comparison of Fanatic Swing with Zeal

  • Sorceress' Zeal speed with 0% IAS is 10/12/19 (1st/F-U/End). Zeal usually swings 5 times, which takes:
    10 + 12 + 12 + 12 + 19 = 65 frames (avg. 13 fpa) 
  • Sorceress' Fanatic Swing speed with 0% IAS is 5/6/19 (1st/F-U/End).
    5 + 6 + 6 + 6 + 19 = 42 frames (avg. 8.4 fpa) 
  • Paladin's Zeal speed with 0% IAS is 7/7/14 (1st/F-U/End).
    7 + 7 + 7 + 7 + 14 = 42 frames (avg. 8.4 fpa) 
  • Sorceress' Fanatic Swing is approximately as fast as Paladin's Zeal. It can reach the fastest breakpoint with less IAS than Zeal, but it tends to be a bit slower than Zeal, especially when the attack ends before it swings 5 times (ie. all nearby enemies may die before you swing 5 times), because of the longer End frame.

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