Errors and Mistakes

[timtheenchanter]

The Monk gets a Ki Pool at 4th level, and in that description it mentions Ki Strike

"Ki Pool (Su): At 4th level, a monk gains a pool of ki points, supernatural energy she can use to accomplish amazing feats. The number of points in a monk's ki pool is equal to 1/2 her monk level + her Wisdom modifier. As long as she has at least 1 point in her ki pool, she can make a ki strike. At 3rd level, ki strike allows her unarmed attacks to be treated as magic weapons for the purpose of overcoming damage reduction. At 7th level, her unarmed attacks are also treated as cold iron and silver for the purpose of overcoming damage reduction. At 10th level, her unarmed attacks are also treated as lawful weapons for the purpose of overcoming damage reduction. At 16th level, her unarmed attacks are treated as adamantine weapons for the purpose of overcoming damage reduction and bypassing hardness."

is Ki Strike an action, or is it just a buff to all his attacks as long as he has at least one Ki?

Also, why does he get the first ki strike ability 1 level BEFORE he gets a Ki pool?

ADD: While were at it, no Extra Ki Powers Feat?