Trying to sort out Two Weapon Fighting modifiers

Question

Level 12 Fighter.

+12 / +7 / +2

Strength 20

+17 Melee Atk mod (BAB +STR)

Offhand weapon is light (Main hand and offhand are the same weapon)

So normally I would be at a +17 / +12 / +7 for my attacks

Feats:

• 2 Weapon Fighting
• Weapon Focus
• Improved 2 Weapon Fighting

I get all this, but I am not sure how to calculate my Main hand and offhand.

It looks like the main hand only ever gets a -2 to hit but the offhand gets a -2 on the first swing and a -5 on the second swing.

Also, I am not sure how many total swings I get in a full attack. It looks like I get 5, instead of the normal three.

Can you all help me sort out how many attacks I get total, and what the modifiers are? I feel silly here, but I don't want to make a mistake at the gaming table.

Answer 1

Main Hand:

+16/+11/+6

The first attack is 12 + 5 (Strength) +1 (Weapon Focus) -2 (Two-Weapon Fighting). The other attacks are at a -5 and -10, determined by the base attack bonus.

Off Hand:

+16/+11

The same penalties and bonuses apply to the first attack, and the second attack is at a -5 penalty as per the Improved Two-Weapon Fighting feat. The -2 from Two-Weapon Fighting always applies, in addition to that -5.

This does not take into account any bonus from the weapon(s) being magical, or from the Weapon Training Fighter class ability. Either of those could affect the attack bonuses if they apply. Weapon Training could either give an additional +1 or +2 to all attacks with these weapons depending on if you selected the corresponding group at 5th level or 9th level.