Maximum caster level

Maximum Caster Level
Some spells are subject to a maximum caster level (MCL). The part of the spell that scales by caster level will no longer scale when the maximum caster level is reached or exceeded, whether through the character's caster level exceeding the MCL or caster level increasing effects pushing the caster level of the spell past the MCL.

It's important to distinguish spell level from caster level and caster level from maximum caster level.

Some general notes:
 * The duration of spells is never limited by a maximum caster level.
 * Some damage absorption spells have a maximum caster level (Protection from Energy / Elements), and some do not (Stoneskin).
 * Certain spells add the caster level to a roll, which is different than a standard save DC. Some have a maximum caster level (Dispel Magic, Greater Dispel Magic) and some do not (Knock, Mordenkainen's Disjunction).

Increasing Maximum Caster Level
There are a select few effects that can increase the maximum caster level of spells:
 * Sorcerer Air / Earth / Fire / Water Savant PRE enhancements: +1 MCL to element type per tier, total of +3
 * Tower of Despair Sorcerer Air / Earth / Fire / Water PRE sets: +2 MCL to element type spells if Savant III (stacks with savant MCL increase)
 * Druid Seasons' Herald PRE enhancements: +1 MCL to seasonal element spells per tier, total of +2
 * Draconic Incarnation tier 4 Dragon Spell Knowledge: +1 MCL to chosen dragon element spells per tier, total of +3
 * Draconic Incarnation tier 4 Secondary Spell Specialty: +1 MCL to dragon ally element spells per tier, total of +2
 * Magister tier 5 Master of [School]: +1 MCL to chosen school spells per tier, total of +3

A few spells are (probably incorrectly) not affected by MCL increasing effects - notably Eladar's Electric Surge and Niac's Biting Cold, forever stuck at MCL 20.

Sorcerer/Wizard Spells with Maximum Caster Level
Only spells that are limited in some part to a maximum caster level (most commonly spell damage) are listed, unless the absence of a MCL is notable.

Cleric/Favored Soul Spells with Maximum Caster Level
Only spells that are limited in some part to a maximum caster level (most commonly spell damage) are listed, unless the absence of a MCL is notable.

Only spells not on the Sorcerer/Wizard list are listed, as spells shared with the Sorcerer/Wizard count as "Arcane" when cast by Clerics/Favored Souls, notably for effects like Arcane Augmentation.