TYPO5478 said:
Another clarification: I wasn't talking about a particular spell. I was talking about casting in general. Any spell can be stopped by counterspelling it (which requires a ready action). Granted, some spells can be stopped in other ways, but to my knowledge there's no method that would stop all of them.
You sure are putting a lot of clarifications on your one sentence riposte.
And, counterspelling does not always require a ready action.
Readied Antimagic (within range) would stop the casting of all spells (shy of Initiate of Mystra).
Normal Antimagic (i.e. not Readied) would stop the casting of all spells (again, shy of IoM).
Readied Silence would stop the casting of most spells.
A Readied attack can stop the casting of most spells (do 50 points of damage and most spell casters cannot make that Concentration roll).
An Attack of Opportunity can stop the casting of most spells (if the caster is not casting defensively).
A (Readied or not) Disarm of a Spell Components Pouch can stop the casting of most spells.
A Readied Fog (or other) Cloud spell can stop the casting of many spells (i.e. removing line of sight).
A Grapple can stop the casting of many spells.
The point is, there are a lot of ways to handle spell casting.
TYPO5478 said:
I don't think I'm familiar with anything that can only be stopped by a readied action. Could you please provide some examples?
It's just a signature.
There is virtually nothing in the game that can only be stopped by a Readied Action, but there are people who post "Ready An Action" in response to a problem situation with few readily available solutions. Such a solution is not really a solution since it requires that the Readying creature know that it has to do so and it requires that the creature potentially waste an action. Do you understand the sig now?
