Serdain said:
Yes i've also had questions
1) Can warlocks use Fey Pact (Misty Step) on monsters who are already on 0 or below. It seems like its only when you bring them to 0 or below, as if when you strike the killing blow as such. But the or fewer is a bit vague.
2)Did I read somewhere monsters fall unconcious on 0 health now? If not, am I crazy?
3)Does concealment just give a +2 bonus, as if you had cover?
For 1 and 2, as was stated eariler, monsters just die at 0(unless you houserule it and start rolling a big pile of saves for fallen monsters every round).
For 3, the best guess seems to be that, since invisibility gives an "11+" chance to hit, concealment is probably a "6+" chance to hit, meaning, if you roll a hit, roll a d20 again and hope you get better than the concealment number.
As for the wizard/warlock blasting things with magic-missiles/eldritch blasts until they get through, in their power descriptions magic missile and eldritch blast require an implement(staff/wand/orb) just as the fighter's abilities require a weapon. Unless they were thrown into the cell with their wand/hammer/whatever, they're probably not going to blast their way out.
I did have the blasting issue come up in a playtest I ran where they were on a wobbly bridge over a moat full of metal spikes with a barred door on the other side and I figured they'd build a battering ram from a broken wagon nearby, but the warlock just threw eldritch blasts at the door until it came apart. If a warrior does it, you could rule that their weapon dulls or something, but if it's arcane energy...
Seems like, given enough time, a wizard/warlock or even a cleric could just sit and throw arcane/necrotic/radiant energy at whatever barrier gets in their way until it comes apart, removing stuff like locked/barred doors and whatnot as an obstacle - unless there's something that notices them making the noise: some need to be sneaky about it. Locked door with no guardian however, no problem. Assaulting a castle? Just throw 10 magic missiles a minute at the wall until it falls apart...
Actually, the biggest issues I forsee with 4E (and there aren't many) is this no-barrier-to-at-will-magic-users issue. (The others are the fey pact warlock + bag of rats/kittens/snakes/cockroaches/whatever teleporting wherever they want and the difficulties in trying to not let the more abstract nature of hp throw off suspension of disbelief).