Horns

Category	Physical
Cost	4
Body LocationThe body part(s) where this mutation can be located	Head
Location Equippable?Whether equipment can be worn on top of the mutated body part	no
ExclusionsOther mutations that cannot be selected with this mutation	Psionic Migraines
VariantsThe Customize options that may be selected for this mutation	Horns, Horn, Casque, Antlers, Spiral Horn
ID^?Use this ID to wish for the mutation (example: `mutation:Horns`)	Horns
Reality DistortingReality distorting mutations cannot be used under the effects of normality.	no
Infobox data from game version 2.0.206.63

Horns

Horns jut out of your head.

20% chance on melee attack to gore your opponent
Damage increment: (level based)
Goring attacks may cause bleeding
Horns are a short-blade class melee weapon.
+(level based) AV
Cannot wear helmets
+100 reputation with antelopes and goatfolk

Horns is a mutation that grants one of the following natural equipment variants on the character's head:

If the character has multiple heads, the horns will only be equipped onto one head. Like other armor, the AV and DV will be averaged across all heads. As well as being armor, Horns act as a short blade weapon type, and can benefit from the Short Blade skill tree. They are one of the few short blade weapons that has an uncapped strength penetration modifier.

When the player selects the Horns mutation, they can also Customize it by pressing "C" during character creation to select the variant of horns they would like. The options are: Horns, Horn, Casque, Antlers, or Spiral Horn. Mechanically, these variants are identical to each other.

The player can select their horn-bearing head as their primary weapon from the equipment screen in order to always attack with their horns as their default weapon. Otherwise, there is only a 20% chance to attack with the horns to when making an attack with any other primary weapon.

When a creature with Horns uses Charge, the chance to attack with horns will be 100% with the bonus penetration from charging. This chance is separate from the default 20% chance to attack with horns, allowing a charging creature to strike up to twice with their horns.

Bleeding effects inflicted by Horns do not stack.

Formulas

The following formulas are used to determine damage and other effects based on mutation level.^[1]^[2]

Damage		2d(Floor(Level / 3) + 3)
To-Hit Bonus		(Level / 2) + 1
AV		(Level - 1) / 3 + 1
Bleeding Damage	Level 1-3	1d1
Bleeding Damage	Level 4+	1d2+(Floor((Level - 4) / 4))
Bleeding Toughness Save Difficulty		20 + (Level × 2)

Advancement Table

Mutation Level	Damage	To-Hit	AV	Bleeding
Mutation Level	Damage	To-Hit	AV	Damage	Save Diff.
1	2d32-6 (Avg: 4)	+1	1	1d11	22
2	2d32-6 (Avg: 4)	+2	1	1d11	24
3	2d42-8 (Avg: 5)	+2	1	1d11	26
4	2d42-8 (Avg: 5)	+3	2	1d21-2 (Avg: 1.5)	28
5	2d42-8 (Avg: 5)	+3	2	1d21-2 (Avg: 1.5)	30
6	2d52-10 (Avg: 6)	+4	2	1d21-2 (Avg: 1.5)	32
7	2d52-10 (Avg: 6)	+4	3	1d21-2 (Avg: 1.5)	34
8	2d52-10 (Avg: 6)	+5	3	1d2+12-3 (Avg: 2.5)	36
9	2d62-12 (Avg: 7)	+5	3	1d2+12-3 (Avg: 2.5)	38
10	2d62-12 (Avg: 7)	+6	4	1d2+12-3 (Avg: 2.5)	40

Mutation Level	Damage	To-Hit	AV	Bleeding
Mutation Level	Damage	To-Hit	AV	Damage	Save Diff.
11	2d62-12 (Avg: 7)	+6	4	1d2+12-3 (Avg: 2.5)	42
12	2d72-14 (Avg: 8)	+7	4	1d2+23-4 (Avg: 3.5)	44
13	2d72-14 (Avg: 8)	+7	5	1d2+23-4 (Avg: 3.5)	46
14	2d72-14 (Avg: 8)	+8	5	1d2+23-4 (Avg: 3.5)	48
15	2d82-16 (Avg: 9)	+8	5	1d2+23-4 (Avg: 3.5)	50
16	2d82-16 (Avg: 9)	+9	6	1d2+34-5 (Avg: 4.5)	52
17	2d82-16 (Avg: 9)	+9	6	1d2+34-5 (Avg: 4.5)	54
18	2d92-18 (Avg: 10)	+10	6	1d2+34-5 (Avg: 4.5)	56
19	2d92-18 (Avg: 10)	+10	7	1d2+34-5 (Avg: 4.5)	58
20	2d92-18 (Avg: 10)	+11	7	1d2+45-6 (Avg: 5.5)	60

Mutation Level	Damage	To-Hit	AV	Bleeding
Mutation Level	Damage	To-Hit	AV	Damage	Save Diff.
21	2d102-20 (Avg: 11)	+11	7	1d2+45-6 (Avg: 5.5)	62
22	2d102-20 (Avg: 11)	+12	8	1d2+45-6 (Avg: 5.5)	64
23	2d102-20 (Avg: 11)	+12	8	1d2+45-6 (Avg: 5.5)	66
24	2d112-22 (Avg: 12)	+13	8	1d2+56-7 (Avg: 6.5)	68
25	2d112-22 (Avg: 12)	+13	9	1d2+56-7 (Avg: 6.5)	70
26	2d112-22 (Avg: 12)	+14	9	1d2+56-7 (Avg: 6.5)	72
27	2d122-24 (Avg: 13)	+14	9	1d2+56-7 (Avg: 6.5)	74
28	2d122-24 (Avg: 13)	+15	10	1d2+67-8 (Avg: 7.5)	76
29	2d122-24 (Avg: 13)	+15	10	1d2+67-8 (Avg: 7.5)	78
30	2d132-26 (Avg: 14)	+16	10	1d2+67-8 (Avg: 7.5)	80

Advantages & Disadvantages

This section is opinion-based. Your mileage may vary.

Advantages

Grants essentially free extra damage
Grants a very significant AV bonus compared to most head armor, particularly in the early game or if rapidly advanced to high levels
Horns are weightless and have no DV penalty
Accurate even with low Agility due to their significant to-hit bonus
At high levels, the significant bleeding save difficulty will cause creatures to bleed for many turns just from being hit one time

Disadvantages

Prevents the player from wearing any headgear
Prevents the player from benefiting from any head mods, such as lanterned

Considerations

Having Two-headed will reduce the disadvantages, as the horns are only attached to a single head. This will allow you to still equip headgear for beneficial effects you can't get with the horns, such as headgear mods. However, this comes with the usual disadvantages associated with two-headed, and means you will still need to procure headgear for one of your heads