[quote="Aryxymaraki"] I think the Ceremonial Value (Eldritch) might have very slightly too high an XP cost. Based on the examples given, a purely ceremonial class value has a Base XP cost of 1/5 the cost they would have for a normal caster. [/quote]
You are correct Eldritch is built as a 2,200 base cost with an improved spell progression which raises the cost to 2,497xp, rounded to 2,500.
But there is no formula that ceremonial class value = 1/5 base XP value! The Ceremonial Values formula is much more complex than that. The disutility of being ceremonial strongly depends on the type of magic. A blast-heavy magic type is more impacted by the long casting time and unreliability of ceremonial magic than is a more divination or healing oriented magic. Sorting this out has been a huge headache.
Here's what I settled on:
- Calculate the base cost of the magic type, setting its source modifier for blast to 1.25 if less than 1.25
- Multiply the base cost by the inferior progression modifier of 0.7
- Multiply the total above by 0.33
- Round the result to the nearest 50xp
That yields XP totals of 508.2 for Ceremonial (Eldritch), 502.4 for Ceremonial (Arcane) and 115.5 for Ceremonial (Divine), rounded to 500, 500, 100.
I think it's possible that this formula is being too kind to Ceremonial (Divine). An alternative formula is based on multiplying EACH type of spell's base cost, as follows:
- Base cost 0.33 (500 x 0.33 = 165)
- Blast 0.2 (blast isn't very useful when cast slowly)
- Death 0.215 (slightly more useful cermeonially relative to blast because of necromantic spells)
- Detection 0.4 (detection is relatively useful when cast slowly)
- Enchantment 0.2 (enchantment is hard to cast slowly as victims tend not to linger around)
- Healing 0.7 (healing is still very useful after a fight)
- Illusion 0.33
- Movement 0.65 (movement very useful as buffs before fights or for long-distance travel)
- Protection 0.33
- Summoning 0.6 (long durations make it useful ceremonially)
- Transmogrification 0.4 (mix of long duration buffs and in-battle magic)
- Walls 0.7 (building permanent walls very useful ceremonially)
This gives outcomes of 497.5 for Eldritch ceremonial, 497.5 for Arcane ceremonial, and 165 for Divine ceremonial. I could be persuaded that the value of 165 for divine magic is better, yielding 85, 165, 320, 640 as class value costs for Ceremonial Divine 1-4.
HOWEVER I have not avidly playtested it for breakage based on particular peculiar magic types.