Fatal Die is not doubled, it is mentioned explicitly on page 451 <a href="https://2e.aonprd.com/Rules.aspx?ID=339" rel="nofollow">https://2e.aonprd.com/Rules.aspx?ID=339</a> they work like this: deadly adds the listed die (after doubling), fatal both changes the die (affecting what is doubled), and adds the listed die Deadly (katar) regular hit is (d4+mods), Crit is (d4+mods)*2 + d6 = max damage, with 0 mod= 14 Fatal (light pick) regular hit is (d4+mods), Crit is (d8+mods)*2 + d8 = max damage, with 0 mod= 24 striking runes change this again since deadly adds more dice with Greater and major striking runes, but fatal does not. with a Major striking rune: The weapon deals four weapon damage dice. katar: regular hit (4d4+mods) (max 16+ mods) , crit is (4d4+mods)*2 + 3d6 max damage, with 0 mod= 50 Light pick: regular hit is (4d4+mods) (max 16+ mods) , Crit is (4d8+mods)*2 + d8 = max damage, with 0 mod= 72 (but I agree that the sheet is impressive work) Cernunnos said: Marten D. said: Quick note, the d8 from deadly is NOT multiplied, so your rapier would be 2(1d6+1) + 1d8. Pretty sure fatal is ALL multiplied, though, so 2(2d10+4) You are correct. Deadly and Fatal bonus damage dice are added after multiplication of the damage so: A) '1d8*2' should be just 1d8 and, B) '2d10+4*2' should be 1d10+4*2+1d10 Just to preface this, incredible work on the sheet so far. Just wanted to add that I second this sentiment. Sheet is making great progress in a good time, and it's greatly appreciated.