By RAW, attacks (real, honest-to-goodness trying to kill the baddy attacks) are combat, combat takes place in combat rounds, initiative is rolled and surprise determined before any attack is resolved, including the attack that kicks off combat!
I have already disagreed with this up thread and I will again...
It has been suggested a few times in this thread that the initial attack should come before initiative is even rolled, and the reasoning seems to be that if the assassin gets surprise then he 'obviously' attacks before the (oblivious) victim could possibly do anything about it.
I'll do you one better, forget before... how about I think you can have a fight with NO INITATIVE ROLL at all...
Example 1: The 6th level fighter with his +2 volcanic axe (deals 2w of damage but it's all fire damage) gets mind controlled to kill the mayor... the mayor is a book stat noble...
Armor Class 11 (dex) Hit Points 9 (2d8)
the player walks up behind him and yells "Hey Jon," and when he turns he says he swings with power attack... the entire fight is 1 roll "Just see if you hit him, or if you roll a 1"
Example 2: High level NPC with a 23 AC normally, and the ability to parry for +4 once per round as a reaction... PC at 3rd level picks a fight with him and declairs "I swing with my knife and hit a 17..." I say "Pink, his armor holds and he laughs drawing his thin arming sword, he tells you he doesn't want to hurt you so just go away" since I have no intention of attacking back, I don't call for iniative at all... if he wants to swing again then roll... but he can just keep trying until he tires, SIr Gavon isn't fighting back...
The trouble with this is that it assumes that the victim cannot do anything about it!
Yup... that's the long and short of it, if I as the DM feel that there is nothing the victim can do about it then dice don't need to be rolled....
Whatever the rule is, it must be able to fairly replicate both situations:
ok, so in a situation where speed and reaction matter, we roll initative, I agree there, I just disagree on when it matters...
the one where the victim never has a clue about any danger until it's too late, AND the one where the victim does get a last minute clue.
yes, and my way does, if you plan it so there is no last minute clue, no roll needed... just like I don't make my players roll 2d12+17 against a target with 9hp... the roll is meaningless...
The chosen rules have to be able to simulate the victim sensing the attack at the last minute, just as easily as they simulate the victim being clueless.
the rule is "It's up to the DM"
Next: reactions. Just like actions, attacks, everything else, reactions need to have the right conditions to function. You need to be able to see (or otherwise sense) the target of your attack or the trigger for your reaction or held action, and this does not need to be repeated in the description of every attack or reaction or spell.
correct, so when My PC is invisable in a crowded street and the NPC has no reason to suspect someone is there, they are surprised and the the PC gets to use Assasinate, no rolls...(well roll to hit and roll for damage)
You cannot cast shield to react to an attack you don't know about, just like you cannot make a weapon attack against a creature that you don't even realise is there. Being able to use reactions after your first turn doesn't remove the requirement to know about the attack that your shield will intercept.
And if I would get surprise if I attacked in round one, but I don't attack until round 15, if I still am hidden I am still surprising you...
I thought this edition was about rulings not rules?