D20:Horizon Walker Prestige Class

Hit Die: d8.

To qualify to become a horizon walker, a character must fulfill all the following criteria.

• Skills: Knowledge (geography) 8 ranks.
  

• Feats: Endurance.
  

The horizon walker?s class skills (and the key ability for each skill) are Balance (Dex), Climb (Str), Diplomacy (Cha), Handle Animal (Cha), Hide (Dex), Knowledge (geography) (Int), Listen (Wis), Move Silently (Dex), Profession (Wis), Ride (Dex), Speak Language (none), Spot (Wis), and Survival (Wis).
Skill Points at Each Level: 4 + Int modifier.

Table: The Horizon Walker

	Base Attack	Fort Save	Ref Save	Will Save	Special
1st	+1	+2	+0	+0	Terrain mastery
2nd	+2	+3	+0	+0	Terrain mastery
3rd	+3	+3	+1	+1	Terrain mastery
4th	+4	+4	+1	+1	Terrain mastery
5th	+5	+4	+1	+1	Terrain mastery
6th	+6	+5	+2	+2	Planar terrain mastery
7th	+7	+5	+2	+2	Planar terrain mastery
8th	+8	+6	+2	+2	Planar terrain mastery
9th	+9	+6	+3	+3	Planar terrain mastery
10th	+10	+7	+3	+3	Planar terrain mastery

All of the following are features of the horizon walker prestige class.
Weapon and Armor Proficiency: Horizon walkers gain no proficiency with any weapon or armor.
Terrain Mastery: At each level, the Horizon Walker adds a new terrain environment to their repertoire from those given below. Terrain mastery gives a horizon walker a bonus on checks involving a skill useful in that terrain, or some other appropriate benefit. A horizon walker also knows how to fight dangerous creatures typically found in that terrain, gaining a +1 insight bonus on attack rolls and damage rolls against creatures with that terrain mentioned in the Environment entry of their descriptions. The horizon walker only gains the bonus if the creature description specifically lists the terrain type.
Horizon walkers take their terrain mastery with them wherever they go. They retain their terrain mastery bonuses on skill checks, attack rolls, and damage rolls whether they?re actually in the relevant terrain or not.
Planar Terrain Mastery: Planar terrain mastery functions just like terrain mastery, except that the horizon walker can choose one of the planar categories at each level. The horizon walker can take a non-planar terrain type instead, if she wishes.

Aquatic: You gain a +4 competence bonus on Swim checks, or a +10-foot bonus to your swim speed if you have one. You gain a +1 insight bonus on attack and damage rolls against aquatic creatures.
Desert: You resist effects that tire you. You are immune to fatigue, and anything that would cause you to become exhausted makes you fatigued instead. You gain a +1 insight bonus on attack and damage rolls against desert creatures.
Forest: You have a +4 competence bonus on Hide checks. You gain a +1 insight bonus on attack and damage rolls against forest creatures.
Hills: You gain a +4 competence bonus on Listen checks. You gain a +1 insight bonus on attack and damage rolls against hills creatures.
Marsh: You have a +4 competence bonus on Move Silently checks. You gain a +1 insight bonus on attack and damage rolls against marsh creatures.
Mountains: You gain a +4 competence bonus on Climb checks, or a +10- foot bonus to your climb speed if you have one. You gain a +1 insight bonus on attack and damage rolls against mountain creatures.
Plains: You have a +4 competence bonus on Spot checks. You gain a +1 insight bonus on attack and damage rolls against plains creatures.
Underground: You have 60-foot darkvision, or 120-foot darkvision if you already had darkvision from another source. You gain a +1 insight bonus on attack and damage rolls against underground creatures.
Fiery (Planar): This kind of planar terrain mastery provides you with resistance to fire 20. You gain a +1 insight bonus on attack and damage rolls against outsiders and elementals with the fire subtype.
Weightless (Planar): You gain a +30-foot bonus to your fly speed on planes with no gravity or subjective gravity. You gain a +1 insight on attack and damage rolls against creatures native to the Astral Plane, the Elemental Plane of Air, and the Ethereal Plane.
Cold (Planar): This kind of planar terrain mastery provides you with resistance to cold 20. You gain a +1 insight bonus on attack and damage rolls against outsiders and elementals with the cold subtype.
Shifting (Planar): You instinctively anticipate shifts in the reality of the plane that bring you closer to your destination, giving you the spell-like ability to use dimension door (as the spell cast at your character level) once every 1d4 rounds. You gain a +1 insight bonus on attack and damage rolls against outsiders and elementals native to a shifting plane.
Aligned (Planar): You have the instinctive ability to mimic the dominant alignment of the plane. You incur none of the penalties for having an alignment at odds with that of the plane, and spells and abilities that harm those of the opposite alignment don?t affect you. You have the dominant alignment of the plane with regard to magic, but your behavior and any alignment-related Class Features you have are unaffected.
Cavernous (Planar): You gain tremorsense with a 30-foot range.
Other (Planar): If other planes are in use additional Planar Terrains can be created.

Hit Die: d8
Skill Points at Each Additional Level: 4 + Intmodifier
Improved Terrain Mastery: The epic horizon walker may select one of the terrains already in her terrain mastery repertoire. The insight bonus on attack and damage rolls against creatures of that terrain increases by +1. The maximum insight bonus for any one terrain is equal to the epic horizon walker?s class level divided by 10, rounded up.
Bonus Feats: The epic horizon walker gains a bonus feat (selected from the list of epic horizon walker feats) every 4 levels after 10th.
Epic Horizon Walker Bonus Feat List: Armor Skin, Blinding Speed, Energy Resistance, Epic Endurance, Epic Prowess, Epic Reputation, Epic Skill Focus, Epic Speed, Epic Toughness, Extended Life Span, Legendary Climber, Perfect Health, Polyglot.
Table: Epic Horizon Walker

Level	Special
11th	Improved Terrain Mastery
12th	Improved Terrain Mastery
13th	Improved Terrain Mastery
14th	Bonus feat, improved Terrain Mastery
15th	Improved Terrain Mastery
16th	Improved Terrain Mastery
17th	Improved Terrain Mastery
18th	Bonus feat, improved Terrain Mastery
19th	Improved Terrain Mastery
20th	Improved Terrain Mastery

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System Reference Document -> Character Classes (SRD)