How do I add power attack to my attack Macro?

Playing a shapechanger in D&D so I get multiple natural attacks and what not. I made a simple macro to cover all my attack rolls and damage but I don't know how to add power attack to it. I'm not using roll20 sheets and I can't target my token. Below is my basic macro: &{template:default} {{name=Claw}} {{attack=[[1d20+17]]}} {{damage=[[2d6+10]]}} &{template:default} {{name=Claw}} {{attack=[[1d20+17]]}} {{damage=[[2d6+10]]}} &{template:default} {{name=Claw}} {{attack=[[1d20+12]]}} {{damage=[[1d8+6]]}} &{template:default} {{name=Rake if Both Claws Hit}} {{attack=[[1d20+17]]}} {{damage=[[2d6+8]]}} &{template:default} {{name=Rake if Both Claws Hit}} {{attack=[[1d20+17]]}} {{damage=[[2d6+8]]}} &{template:default} {{name=Rend if Both Claws hit}} {{damage=[[4d6+10]]}} &{template:default} {{name=Grapple if Bite Hits}} {{attack=[[1d20+21]]}} How can I add in the ability to do power attack? Also if possible how can I double the damage given  from power attack because i have a feat that lets me double power attack damage when leaping.

Depending on what edition of DnD you are player the answer may be somewhat different but in 3.5e you would simply add a query to your attack and damage. The first instance of it would be - ?{BAB Sacrifice|1} to tell it to reduce the attack roll by 1(since it is a query that would be the default, you could of course increase that number when the query prompt pops up when running the macro. Subsequent calls can be made with simply ?{BAB Sacrifice}  on it's own and can be prefixed with -/+ as needed ( - for attack, + for damage). Example below in bold: &{template:default} {{name=Claw}} {{attack=[[1d20+17 - ?{BAB Sacrifice|1} ]]}} {{ damage=[[ 2d6+10 + ( ?{BAB Sacrifice}  * ?{Leaping?|No,1|Yes,2}) ]]}} &{template:default} {{name=Claw}} {{attack=[[1d20+17 -   ?{BAB Sacrifice} ]]}} {{ damage=[[ 2d6+10 + ( ?{BAB Sacrifice}  * ?{Leaping?|No,1|Yes,2}) ]]}} &{template:default} {{name=Claw}} {{attack=[[1d20+12 - ?{BAB Sacrifice} ]]}} {{damage=[[ 1d8+6 + ( ?{BAB Sacrifice}  * ?{Leaping?|No,1|Yes,2}) ]]}} &{template:default} {{name=Rake if Both Claws Hit}} {{attack=[[1d20+17 - ?{BAB Sacrifice} ]]}} {{damage=[[ 2d6+8 + ( ?{BAB Sacrifice} * ?{Leaping?|No,1|Yes,2}) ]]}} &{template:default} {{name=Rake if Both Claws Hit}} {{attack=[[1d20+17 - ?{BAB Sacrifice} ]]}} {{damage=[[ 2d6+8 + ( ?{BAB Sacrifice} * ?{Leaping?|No,1|Yes,2}) ]]}} &{template:default} {{name=Rend if Both Claws hit}} {{damage=[[ 4d6+10 + ( ?{BAB Sacrifice}  * ?{Leaping?|No,1|Yes,2}) ]]}} &{template:default} {{name=Grapple if Bite Hits}} {{attack=[[1d20+21]]}} To double the damage just add a second query that helps you define whether or not you were leaping which would add some multiplication, also added above in italics.

Thank you very much sorry I forgot to put it was 3.5 This will save me a lot of time rolling things out.