Actually, does he lose that muchWill said:All levels aren't created equal.
If I'm a 19th level cleric, gaining a level of wizard... um.
This is the most extreme case, but it outlines the principle.
Now whether in this case things seem fair, that comes down to judgement calls.
Alzrius said:In a word, yes.
Alzrius said:The wizard in this case is gaining almost nothing (few hit points and skill points) aside from those two spell slots. Given that he already has some for those already, it isn't that much of an increase in power that it alone deserves a CR increase...or is it?
Alzrius said:Incidentally, you mention that a CR 14 dragon would become a CR 15 creature for only gaining a "couple of third level spells". I decided to try and see where this would apply:
Alzrius said:A mature adult black dragon is CR 14, and casts spells as a 5th level Sorcerer. Gaining a sorcerer level not only grants it an additional 3rd level spell, but also an additional 1st and 2nd level spell slot also (bonus spells due to high Charisma).
Alzrius said:And of course, it'd gain three 4th level spell slots...quite a jump in spellcasting power, and more than worthy of a CR increase.
Alzrius said:Likewise, even if the instance were more generic than that, it'd still be worth the CR increase. A 3rd level spell slot can be used for a fireball, lightning bolt or what have you. It's the same as the superlatives you use for the 18th/19th level mage, just on a lower power-scale. Between that and the skill and hp increase (and depending on when it's taken, feat and/or ability increase), plus the save increase, altogether it does add up to being worth an CR +1.
Silvanos said:If you skip it... At what point do you START adding it?
Silvanos said:Well I draw the line at 1 level = 1 CR. For reasons I already stated.![]()
Like with most things... It is up to the DM.
D
Did you read my example spells? If you hamstring your dragon by choosing crap spells for him, of course it won't be worth a CR. But if you give him useful combat spells or spells that allow him to escape his foes, then his combat abilities are most definitely enhanced. Heck, just giving him Haste will make him faster than anything on the planet and give him an extra bite to snatch with.Scion said:So it gets one third, one second, and one first? These are going to do what exactly against a party of 15th level adventurers? Not a whole lot of anything. If the spells dont help increase the creatures fighting capability by a sizeable amount then it isnt worth a change in CR. Those spells are mainly flavorful, they wont do much of anything vs the pc's.
So he gets to choose a single 3rd level spell to cast up to 3 times that day. And he gets to pick a 0th level spell. None of this is enough to up the CR of this already very formidable creature.
Very, very doubtful. No matter how good that single 3rd level spell might be it certainly isnt worth anywhere near half of what he gets for just being a dragon. The extra power gained from that level of sorc isnt even a blip on its radar of abilities. All of its natural abilities far outstrip it in every way, it wont increase this mighty foes combat abilities anywhere near to the point of an extra point of CR.
Scion said:Levels for characters and levels for monsters work differently. For the pc it isnt just combat, it is everything. For the monsters the CR tends to depend more on combat.
Silvanos said:It seems that the trouble is that your are adding the Sorc level after the fact... And that seems weak. I'll buy that. What if you added it to a baby dragon, and then the dragon grew up with it? Surly those spells on a CR1 critter make it a CR2. Why would it suddenly drop off at CRX Y or Z?

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.