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Spellburst is a balancing mechanic for higher level hunting areas to manage the amount of outside spells a character can wear in the affected areas. Those areas are the Griffin's Keen, Temple Wyneb (Skull temple), Old Ta'Faendryl, the Ruined Temple (Nelemar) on Teras, and Sanctum of Scales. Spellburst penalizes characters under the effects of too many beneficial spells outside of their profession's spell circles, causing hitpoint and critical damage or even death.

Player Research

This section is what players have been using for years until a better description is provided. For additional research that incorporates usage with the ;burst_calc Lich script, see here

Training in magical skills will help to increase the amount of outside spells a character can safely wear in a spellburst environment:

All Ranks Benefit Half of Ranks Benefit

The following formula seems to be accurate up to half one's level in wearable outside mana. This formula goes is not accurate once the result is over half one's level in wearable mana.

All values are Skill RANKS, not Skill BONUS.

Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://api.formulasearchengine.com/v1/":): {\displaystyle \mathrm{[Wearable\ Mana]} = \frac{(AS + MIU + HP + SA) + 0.5([Mana\ Controls] + Lores)}{(225.0 / level)}}

Worn mana should be calculated as follows:

  • No known spells will be counted toward the worn mana total.
Example: A locksmith rogue who learned up to Disarm Enhancement (404) will not be penalized for wearing that spell or the lower 3 spells (401, 402, and 403) in a spellburst area.
  • Learnable spells have their mana values halved for spellburst calculations.
Example: Our locksmith rogue with self-cast lores has received some guards. (spell 414) Since the 400s circle is learnable by rogues, the spell value of 414 for the rogue is 7 mana.
  • Certain spells are weighted heavier than other spells. For instance, elemental spells seem to burst 0.5 mana sooner than spiritual spells. Spells with a spellburst mana cost of 9+ seem to be extra volatile as well. Examples are Strength, Mass Blur, Mobility, Bravery, Heroism.
  • GROUP and ARCANE spells do NOT count toward spellburst. Mass spells, however, do count for spellburst. Also, offensive spells that show up in the SPELL ACTIVE list do not count toward spellburst. The following is a list of spells known to show up in the SPELL ACTIVE list that do not count toward spellburst.
201, 210, 212, 214, 216, 307, 310, 311, 316, 412, 413, 501, 504, 607, 703, 706, 713, 715, 716, 1001, 1005, 1015, 1016, 1117, 1120, 1125, 1605, 1609, 1617, 1618

Sample Calculation

Level 75, rogue, 24 AS, 24 MIU, 31 HP, 20 SMC, 20 EMC ranks, knows to spell 404.

In order to determine the wearable mana of this rogue, we plug the numbers into the formula.

((24 + 24 + 31) + 0.5(20 + 20))/(225 / 75)
(79 + 20) / 3.0
99 / 3.0 = 33.0 wearable mana.

  • I intentionally selected a skill/level set that would generate an end result that is less than half the level in wearable mana.

Assume once that that same level 75 rogue had... 30 AS, 30 MIU, 40 HP, 20 SMC, 20 EMC ranks... the formula would generate 40 wearable mana. At level 75, the formula is only accurate up to about 37.5 mana, so that "extra" 2.5 mana is really more like... 1 mana. I haven't gathered enough data to actually crack the next step.

Assume this rogue capped without gaining any relative magical skills....

The initial skill set...

((24 + 24 + 31) + 0.5*(20 + 20))/(225 / 100) = 49.5 wearable mana.

The secondary skill set...

((30 + 30 + 40) + 0.5*(20 + 20))/(225 / 100) = 60 wearable mana.

The initial skill set generates a value lower than half the level in wearable mana, while the second generates a value more than half the level of the character. That said, the wearable mana is probably more like, 52 wearable mana. Again, I just haven't been able to solve the next step of the formula.

Let's assume we are dealing with the initial skills set of the level 75 rogue with 4 minor elemental ranks. The wearable outside mana came to be 33. It is important to manage what spells fill that 33 mana, as some spells are quite costly with minimal benefits. Since both the 100s and 400s circles are learnable by the rogue, it's probably best to add those spells first. 101, 103, 107, 406, 414. Those spells, all combined have a mana value of 31, 15.5 when halved. Subtract that from the initial 33 total, and we have 17.5 mana to add. If you have 601, 202, 503, 509, that's a quick 15 mana, leaving 2.5 extra wearable mana as a buffer, which is good.


In closing: The information above is as accurate and simply put as I can give it. There are some gray areas in the research, and the formula, and in how to calculate each individual spell value. Spells that constantly cause oddities for me were 509, 911, 215, 211, 219, 618, 313, 913, 513, off the top of my head. Simply adding 0.5 mana to their base value seemed to help remedy some of the problems with the calculations. Good luck! Burst less!

Information and testing provided by Gibreficul.

See Also