Pesky flavor lawyers.http://www.wizards.com/default.asp?x=dnd/4ask/20080701a
Not the most pressing of issues, but it's nice to see that Sage Advice will start tackling some of the rules ambiguities.
keywords and magic items: does the power get the keyword of the item its using (my thought long and short of it no, you do not turn a fireball into a firecold ball with an appropriate wand/staff/orb you just add the damage which said implement does)
Vorpal falchions: should they explode when any of the weapons D4 turn up 4 or only if both turn up 4? (rules as written only if both turn up, rules as intended its a new faster game I'd houserule with any individual dice turning up 4 explodes)
Stealth in combat: what prevents a rogue hiding behind a combat, sneak attacking, hiding with a minor movement (maybe even behind an ally) and then sneak attacking again, also whether the enemy of the rogue gets to roll his perception against the hide or just uses his passive ( I go with a roll for perception and the interpretation that once the enemy is aware of you you need to sneak attack from a different square)
Warlock daggermaster: multi class rogue and take daggermaster paragon path to gain among other things crit of 18-20 which apparently combines with the pact blade implement which can be a dagger and a warlock implement (I'd rule no way jose, a daggermaster is uber at slitting throats and vital spots with the business end of a dagger not increasing pact ranged powers still if the lock made a weapon attack with the pact blade the crit would be there)
Running while slowed: a move action is normally you move you speed, run is where you move your speed +2, slow a condition where your speed cannot increased above 2, question is is that +2 from run increasing your speed or just the squares moved (I rule squares moved) another question related to this is does slow take you to 2 movement then you apply more penalties like heavy armor, so if slowed and in chainmail you can only move 1 (I rule nope it only takes you to the +2 movement, one of the main reasons is that normally monsters -ve movement due to armor is not included in their stat blocks)
The RAW says "Whenever you roll the maximum result on any damage die for this weapon" that means any of the dice, not both d4s.
Doesn't seem ambiguous to me. It says "any damage die" in the vorpal description. Just because another section referring to something else used the word "die" to mean "dice expression" doesn't mean that's how it's used in the vorpal description. Unless there's a definition of "damage die" somewhere that contradicts this, the definition of [W] does not.
Right, it's like you had a die that could somehow roll a bell curve between 2 and 8. But since no such die exists in reality, we use 2d4 to simulate it.That IS the definition of damage die that I quoted. That section specifically states that anything listed in the damage column of the weapons tables is called a damage die. "Damage: The weapon’s damage die." It then goes on to state that, "If the weapon’s damage die is an expression of multiple dice...." Which means that a "damage die" can be such an expression. And then it cites an example, "a falchion (which has a damage die of 2d4)."

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.