Barbed Wire

There are six types of barbed wire in the mod. All of them slow entities down similar to a cobweb. It attacks from cactus damage, unless it's the cloud barbed wire. The regular one is a base that all of the others are crafted from.

Barbed Wire
This is the most basic type of barbed wire. It does one heart of damage every tick while an entity is in it (one heart of damage is not actually done every tick because of the damage immunity time), and that's about it.

Flaming Barbed Wire
This is pretty similar to the regular barbed wire. It does one heart of damage every tick, and also sets the entity on fire.

Poisoned Barbed Wire
This does the same thing as the regular barbed wire, but it also gives the entity poison 3 for 5 seconds.

Caustic Barbed Wire
This does the same thing as the regular barbed wire, except it does heavy damage to armor. Armor is damaged by one once every tick, so that's 20 damage per second.

Withered Barbed Wire
This does the same thing as regular barbed wire, but it also gives wither 5 for 5 seconds.

Cloud Barbed Wire
This is by far the strongest barbed wire. It does 2.5 hearts of damage, attacks from cloud damage (so the damage bypasses armor), and gives Contaminated 10 for 5 seconds.

Trivia

 * Due to it appearing to be based on cobwebs, spiders pass through them with no physical resistance.