BASHMAN
Basic Action Games
At 3rd Level, the Knight in the Player's Handbook 2 gets an ability called defensive bullwark. It states that any creature begining its turn in your threatened area treats the area you threaten as Difficult Terrain.
The effects of difficult terrain say: Each square of difficult terrain counts as 2 squares of movement. (Each diagonal move into a difficult terrain square counts as 3 squares.) You can’t run or charge across difficult terrain.
Enter the Knight with the spiked chain. He threatens a 10' radius around himself. Suppose a barbarian charged the knight to attack him. The knight would get an AOO for the barbarian exiting a square he threatened, but the barbarian doesn't care, he's used to incurring AOOs from charging, and besides, next round he'll do his full attack action, and tear the knight up... WRONG.
On the knight's turn, he takes a 5' step back, and full attacks the barbarian. On the barbarians turn, he tells the DM he takes a 5' step and full attacks the knight. The DM says, "No, that square is considered difficult terrain. It takes you 10' of movement to move there, and therefor, you cannot take a 5' step into it." Frustrated, the barbarian takes the 10' of movement then necessary to attack, and incurrs and AOO again, because he left a threatened square [and not with a 5' step or tactical withdrawal]. The barbarian takes his licking, then gives the knight a single attack. The knight then takes a 5' step back, and full attacks the barbarian again, and the process repeats itself until the barbarian dies or retreats.
So, is this broken? Remember, there are other ways for a knight to gain reach that can be just as broken. Potions of enlarge person, or simply being an Ogre knight would also do it. Don't forget the lance is also a reach weapon. If you have a reach weapon and improved unarmed strike, you also threaten both your adjacent square and 10' away...
The effects of difficult terrain say: Each square of difficult terrain counts as 2 squares of movement. (Each diagonal move into a difficult terrain square counts as 3 squares.) You can’t run or charge across difficult terrain.
Enter the Knight with the spiked chain. He threatens a 10' radius around himself. Suppose a barbarian charged the knight to attack him. The knight would get an AOO for the barbarian exiting a square he threatened, but the barbarian doesn't care, he's used to incurring AOOs from charging, and besides, next round he'll do his full attack action, and tear the knight up... WRONG.
On the knight's turn, he takes a 5' step back, and full attacks the barbarian. On the barbarians turn, he tells the DM he takes a 5' step and full attacks the knight. The DM says, "No, that square is considered difficult terrain. It takes you 10' of movement to move there, and therefor, you cannot take a 5' step into it." Frustrated, the barbarian takes the 10' of movement then necessary to attack, and incurrs and AOO again, because he left a threatened square [and not with a 5' step or tactical withdrawal]. The barbarian takes his licking, then gives the knight a single attack. The knight then takes a 5' step back, and full attacks the barbarian again, and the process repeats itself until the barbarian dies or retreats.
So, is this broken? Remember, there are other ways for a knight to gain reach that can be just as broken. Potions of enlarge person, or simply being an Ogre knight would also do it. Don't forget the lance is also a reach weapon. If you have a reach weapon and improved unarmed strike, you also threaten both your adjacent square and 10' away...