Goumindong
First Post
If damaging spell effects were terrain, then they would be hindering terrain.
They are hindering terrain. Your logic is like saying "power cannot deal damage because powers are not listed specifically in the ability to deal damage section of the rules".
A better example would be the forced movement rules themselves. The forced movement rules are not in the power section. Therefore, by your argument the forced movement rules do not apply to powers. If they wanted the forced movement rules to apply to powers they would have put the forced movement rules on each and every power or in the power section.
Oh wait, that is foolish. The question is "does this meet the requirement to be hindering terrain" and only "does this meet the requirement to be hindering terrain". The question is not "what idea can i bring up to somehow not apply the hindering terrain rules, which apply to any squares which have effects[I.E. exactly what zones and damaging conjurations do]"
The long and short of it is "specific > General"
The general rule is clear. We have a definition of hindering terrain. In order for the general rule to not apply there needs to be a rule, somewhere, anywhere that says it does not. Powers are not exempt "just because" there must be a rule that exempts them.
This is especially important because of just what a power is. A power is just an effect that a player can create. It is not special in any way except that it may be something that no one else can do. E.G. a basic melee attack is a power that all NPC's, PCs, and monsters have. Everyone can make a melee basic attack. Its a power. It is no different than a "making a fire" power that all NPC's PC's and intelligent monsters with opposable thumbs can do.
What is the difference between PC's making a fire fast, PC's making a fire slow, and NPC's making a fire slow? Nothing but the time it takes to make the fire.
Effects are not ruled as special in any instance because they come from a power, not once, not ever in the PHB. Hindering terrain is just terrain that has an effect triggered on the square. It doesn't matter if the "terrain" creates the effect, or a player created the effect in the square.
Such, the rule is clear. The general rule applies, there is no specific rule to override the general rule. Powers are hindering terrain if they create effects that meet the requirements.
Fake edit: I mean, lets go over some of the ridiculous stuff you can do with this. If a player puts spikes down on a square in an attempt to modify the battle, its not hindering terrain, but if the terrain has spikes naturally it is hindering terrain. If an NPC digs a ditch and lights it on fire, its not hindering terrain, but if the terrain is just on fire naturally or if the NPC digs a ditch and pours in napalm then its light on fire by a lightning strike it is hindering terrain? Ridiculous, there is no difference in the labeling of terrain based on whether or not a PC, NPC, or "natural event" created the terrain.