frankthedm said:
IMHO when the intial attack can be taken because; fairness and the issue of who let thier guard down come into play.
Except that it doesn't matter if someone's guard is down.
You go first in the initiative order and kill someone? Cleave. They're flatfooted. Their guard is still down. It doesn't matter. Completely fair.
Someone runs past you at full speed? No Dex bonus to AC? You kill them in one shot? Cleave.
You prepared an action to attack when someone cast a spell, and you roll a crit and kill them? Cleave.
Fairness and "who let their guard down" have nothing to do with it.
The circumstances that trigger a cleave are very specific:
1. You have a Str score of 13 or greater.
2. You have taken the Power Attack feat.
3. You have taken the Cleave feat.
4. You attacked someone or something, and hit, and did damage.
5. Your attack did sufficient damage to reduce them to 0 hit points or below.
6. Something else is standing in one of your threatened squares, and you are aware of it.
Everything else is preference.