D20:Chain, Spiked Weapon

A spiked chain has reach, so you can strike opponents 10 feet away with it. In addition, unlike most other weapons with reach, it can be used against an adjacent foe.
You can make trip attacks with the chain. If you are tripped during your own trip attempt, you can drop the chain to avoid being tripped.
When using a spiked chain, you get a +2 bonus on opposed attack rolls made to disarm an opponent (including the roll to avoid being disarmed if such an attempt fails).
You can use the Weapon Finesse feat to apply your Dexterity modifier instead of your Strength modifier to attack rolls with a spiked chain sized for you, even though it isn?t a light weapon for you.

Spiked Chain Material Enhancements

Material	Average	Masterwork1	Hardness	hp	Special
Steel	25 gp	50 gp	10	*2	?
Adamantine	?	3,025 gp	20	*2	Bypass hardness less than 20
Crystal, Deep	?	1,025 gp	10	*2	Psionic
Crystal, Mundane	?	{{{mccost|50 gp}}}	8	*2	No rusting, not metal
Darkwood	?	n/a	n/a	n/a	?
Iron, Cold	50 gp	350 gp	10	*2	Magical enchantments cost an additional 2,000 gp.
Mithral	?	5,025 gp	15	*2	1/2 weight
Silver, Alchemical	205 gp	505 gp	8	*2	−1 damage
Masterwork weapons have a +1 enhancement bonus on attack rolls. The SRD gives neither this value nor a means to accurately determine it.

Magical/Psionic Weapon Enhancements

Bonus Value	Additional Cost1	Hardness Increase2	Additional hp2
+1	+Template:formatnum: -- template expr: 40 50 gp	+2	+10
+2	+Template:formatnum: -- template expr: 160 50 gp	+4	+20
+3	+Template:formatnum: -- template expr: 360 50 gp	+6	+30
+4	+Template:formatnum: -- template expr: 640 50 gp	+8	+40
+5	+Template:formatnum: -- template expr: 1000 50 gp	+10	+50
+6	+Template:formatnum: -- template expr: 1440 50 gp3	+12	+60
+7	+Template:formatnum: -- template expr: 1960 50 gp3	+14	+70
+8	+Template:formatnum: -- template expr: 2560 50 gp3	+16	+80
+9	+Template:formatnum: -- template expr: 3240 50 gp3	+18	+90
+10	+Template:formatnum: -- template expr: 4000 50 gp3	+20	+100
+11 or more	+ bonus × bonus × Template:formatnum: -- template expr: 400 50 gp	+ enhancement bonus × 2	+ enhancement bonus × 10
Increase total cost for magical enhancement by 2,000 gp for cold iron weapons. Unlike the additional cost, the increase the weapon's hardness and hit points are only gained from its enhancement bonus, not its special abilities. If the weapon has a magical bonus greater than +5 or a special ability worth more than +5, the weapon is epic. Multiply magic cost by 10.

• Weapon Qualities
  
• Magic Items: Weapons
  
• Wikipedia: Chain Weapons
  

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System Reference Document -> Equipment (SRD) -> Weapon Descriptions