Step 5: Size Graft
If your monster isn't Medium, apply a size graft. Because there are many other ways to alter a creature's AC, hit points, attack bonuses, and damage, these grafts don't adjust those values like size changes do in the core rules. Most headers list a minimum CR or maximum CR, as described in the previous step. Use caution if your monster is outside the minimum or maximum CR range. Touch and flat-footed AC never increase above the monster's total AC, and never decrease below 1.
Fine (CR 2–)
Automatic Traits: Increase touch AC and flat-footed AC by 8; decrease CMB by 16; decrease CMD by 8; gain Fly and Stealth as additional master skills.
Diminutive (CR 4–)
Automatic Traits: Increase touch AC and flat-footed AC by 4; decrease CMB by 8; decrease CMD by 4; gain Fly and Stealth as additional master skills.
Tiny (CR 6–)
Automatic Traits: Increase touch AC and flat-footed AC by 2; decrease CMB by 4; decrease CMD by 2; gain Fly as an additional good skill (or increase good to master) and Stealth as an additional master skill.
Small
Automatic Traits: Increase touch AC and flat-footed AC by 1; decrease CMB by 2; decrease CMD by 1; gain Stealth as an additional good skill.
Large (CR 2+)
Automatic Traits: Decrease touch AC by 1, increase flat-footed AC by 1; increase CMB by 2; increase CMD by 1.
Huge (CR 4+)
Automatic Traits: Decrease touch AC by 2, increase flat-footed AC by 3; increase CMB by 4; increase CMD by 2; can't have Stealth as a master skill.
Gargantuan (CR 6+)
Automatic Traits: Decrease touch AC by 4, increase flat-footed AC by 5; increase CMB by 8; increase CMD by 4; can't have Fly as a master skill, can't have Stealth as a good or master skill.
Colossal (CR 8+)
Automatic Traits: Decrease touch AC by 8, increase flat-footed AC by 6; increase CMB by 16; increase CMD by 8; can't have Fly or Stealth as good or master skills.
