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Message: <blockquote data-quote="Purzel" data-source="post: 1097287" data-attributes="member: 11201">I've tried around a while to find some formula or table, that could fix one aspect of the multiclassing of spellcasters: the casterlevel used to determine the spells per day and spells known. I know the MT prestige class and the other ideas D&D3.5 introduced. But i've came up with this:First i need some variables:X = Level when the character started to multiclass TOT = Total character level (all spellcaster AND all non-spellcaster levels too) CLASS = current spellcaster class levelA character gains a bonus to the casterlevel of  a class. This bonus can be calculated in this way:(Bonus to class) = (TOT-CLASS-X)/2 or (CLASS), whichever is lower.Example: Wizard10/Cleric10 who started multiclassing first in level 2X=2 TOT=20 Bonus to Wizard Casterlevel = (20-10-2)/2 = 4 Bonus to Cleric Casterlevel = (20-10-2)/2 = 4 So this 20th level character can cast like a 14th level character (7th level spells) in both classes (NOTE: the character turns undead like a 10th level cleric, has a familiar and bonus feats like a 10th level wizard) Gives up (compared to 20th level caster): 9th and 8th level spells Gains:7th level spells of a second classExample: Wizard16/Cleric4 who started multiclassing first in level 2X=2 TOT=20 Bonus to Wizard Casterlevel = (20-16-2)/2 = 1 Bonus to Cleric Casterlevel = (20-4-2)/2 = 6   or Cleric Classlevel=4 (which is lower than 6) So this 20th level character can cast like a 17th level Wizard (9th level spells) and like a (4+4) 8th level Cleric (4th level spells). Gives up: Three 9th level spells Gains:4th level spells of a second classExample: Wizard19/Cleric1 who started multiclassing first in level 2X=2 TOT=20 Bonus to Wizard Casterlevel = (20-19-2)/2 = -0.5 (rounded to 0) Bonus to Cleric Casterlevel = (20-1-2)/2 = 8.5 (rounded to 8)   or Cleric Classlevel=1 (which is lower than 8) So this 20th level character can cast like a 19th level Wizard (9th level spells) and like a (1+1) 2th level Cleric (1th level spells). Gives up: One 9th level spell        Gains:1st level spells of a second classAs you see, the characters produced by this house rule are not too powerful. Compared to straight casters they give up their best spells (up to 2 spell levels) to get access to (low-level) spells of a second class. The variable X (see above) is important to prevent characters from multiclassing into a spellcaster class late in his career and gaining all the benefits way too quickly. The later a character multiclasses, the worse will be his casterlevel boni.This houserule produces fairly balanced characters even with spellcaster/non-spellcaster combinations. And it can be even used with three or more coreclasses used in the multiclassing.I've checked, that the house rule produces balance over the range of 20 levels. Here some examples from the high, middle and early levels:Example: Wizard8/Cleric7 who started multiclassing first in level 2X=2 TOT=15 Bonus to Wizard Casterlevel = (15-8-2)/2 = 2.5 (rounded down to 2) Bonus to Cleric Casterlevel = (15-7-2)/2 = 3 So this 15th level character can cast like a 10th level character (5th level spells) in both classes Gives up (compared to 15th level caster): 8th, 7th and 6th level spells Gains:5th level spells of a second classExample: Wizard5/Cleric5 who started multiclassing first in level 2X=2 TOT=10 Bonus to Wizard Casterlevel = (10-5-2)/2 = 1.5 (rounded down to 1) Bonus to Cleric Casterlevel = (10-5-2)/2 = 1.5 (rounded down to 1) So this 10th level character can cast like a 6th level character (3rd level spells) in both classes Gives up (compared to 10th level caster): 5th and 4th level spells Gains:3rd level spells of a second classExample: Wizard4/Cleric1 who started multiclassing first in level 2X=2 TOT=5 Bonus to Wizard Casterlevel = (5-4-2)/2 = -0.5 (rounded to 0) Bonus to Cleric Casterlevel = (5-1-2)/2 = 1 So this 5th level character can cast like a 4th level wizard (2nd level spells) and like a 2nd level cleric (1st level spells) Gives up (compared to 5th level caster):  3rd level spells Gains:1st level spells of a second classNow i need your help and advice:I want to develop and verify this houserule, please help <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":)" title="Smile    :)"  data-smilie="1"data-shortname=":)" />The big weakness of the houserule is the complexity of the calculations. There's nothing comparable like this anywhere in the D&D rules. And the calculations need to be redone every gained level.Another not very obvious weakness is the setting of variable X (see above). I've been thinking about setting it fixed to 2. Variable X can affect the development of late-multiclassed characters dramatically.What problems do you see with this houserule? I haven't playtested it yet. Too weak? To powerful?Did i make an error somewhere? <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f615.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":confused:" title="Confused    :confused:"  data-smilie="5"data-shortname=":confused:" /> Can you try to munchkin this houserule?  <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f600.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":D" title="Big grin    :D"  data-smilie="8"data-shortname=":D" />AND finally: i'm looking for a better way to describe this rule. My english is not good enough to write it down properly.</blockquote>

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