|Devil's Advocate RPG Superstar 2009 Top 16, 2012 Top 32|
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Devil's Advocate wrote:Interestingly enough, the reason this doesn't work is because it doesn't provide a mechanism for casting spells. Arcane surge does provide a mechanism.
Check it out, everyone! The Eschew Materials feat lets fighters cast unlimited 9th-level spells!Eschew Materials wrote:Benefit: You can cast any spell with a material component costing 1 gp or less without needing that component. The casting of the spell still provokes attacks of opportunity as normal. If the spell requires a material component that costs more than 1 gp, you must have the material component on hand to cast the spell, as normal.See that! "You can cast any spell with a material component costing 1 gp or less..." It says it right there in the first sentence. And it doesn't say that spells you cast require you to spend spell slots or mythic power. As long as it's a spell with a material component costing 1 gp or less, you just cast it for free whenever you want.
Arcane surge does not provide a mechanism for casting a spell any more than Eschew Materials does.
A mechanism for casting a spell would have to explain how it interacts with all of the rules contained in the section of the Core Rulebook entitled "Casting a Spell." Those rules, as a group, are the definition of what casting a spell is in Pathfinder.
From a rules perspective, an ability that says "you can cast a spell" is not spellcasting. Spellcasting is what happens when you perform an action allowed by that ability and also go through the process described in the "Casting a Spell" section to resolve that action.
Note that the rules in the "Casting a Spell" section repeatedly reference caster level. An ability that does not define a caster level cannot be used as a mechanism for casting a spell because it does not provide enough information to resolve the action it supposedly allows.
Also, you cannot bypass this mechanical defect by always using your action to cast a spell that is caster level independent, because concentration checks still depend upon caster level and can occur even while you are casting a spell that is caster level independent.
In fact, any time a PC casts a spell, the player has no way of knowing if a concentration check will be required. There could be a hidden opponent ready to cast a spell that creates a weather effect if you cast a spell, necessitating an unexpected concentration check.
The so-called spell casting mechanism you are proposing for arcane surge literally cannot tell you, at the time your character begins casting any spell, if your GM will have sufficient information to resolve your action using the the "Casting a Spell" rules.
Your proposed mechanism cannot ever guarantee that it will allow you to use the "Casting a Spell" rules to resolve your spell, so it is not a complete mechanism for casting a spell. It is also not RAW, because the written rules you cited do not contain enough information to implement your proposed mechanism. If a mechanism invokes things that are not actually defined anywhere in the rules, it isn't really a "rule as written."