A sohei is proficient with all simple and martial weapons and with light armor.
A sohei may select Mounted Combat feats as bonus feats.
At 1st level, a sohei can always act in a surprise round even if he does not notice his enemies, though he remains flat-footed until he acts. In addition, a sohei gains a bonus on initiative rolls equal to 1/2 his monk level. At 20th level, a sohei’s initiative roll is automatically a natural 20.
This ability replaces Stunning Fist.
A sohei’s unarmed strike damage does not increase at 4th level and above.
At 4th level, a sohei may spend 1 point from his ki pool to grant his mount temporary hit points
equal to twice his level for 1 hour per level. In addition, as long as
the sohei and his mount are adjacent, including when mounted, the mount
gains any of the following abilities the sohei possesses: AC bonus,
diamond soul, evasion, high jump, improved evasion, ki strike (as long as the sohei has at least 1 point in his ki pool), perfect self, and still mind. When a sohei spends points from his ki pool, his mount gains the same benefits as the sohei.
At 4th level, as a swift action, a sohei may spend 1 point from his ki pool to grant any weapon he wields (including his unarmed strike) a +1 enhancement bonus
on attack and damage rolls, increasing by +1 per four levels after 4th
to a maximum bonus of +5 at 20th level, until the end of his next turn.
At 6th level, a sohei gains weapon training in one of the following weapon groups, as the fighter class feature: bows, crossbows, monk
weapons, polearms, spears, or thrown weapons. He may select an
additional group of weapons for every six levels after 6th, to a maximum
of three at 18th level. A sohei may use flurry of blows and ki strike with any weapon in which he has weapon training.