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I am making a Gnome Fighter, I just lost everything I typed with preview but stats don't matter as these are general questions. Here are my trip CMB related questions.
1. Which of the following apply to CMB; Weapon Focus, Weapon Enchantments, situational modifiers and buff spells?
2. Does a trip attack with a two-handed weapon that uses 1.5 str bonus also go into the CMB (Str+BAB) ?
Example: Fighter1 is using a Guirsame to trip, he has an 18 Strength and is level 1. CMB states it is Strength + BAB. So is his CMB 7 (1.5 STR + 1 BAB).
3. When I am attacking with a full attack and want use one of my attacks to trip do I use the BAB of the attack I am using for it? or do I use my highest BAB attack towards the CMB?
Example Fighter 2 is making a full attack with a flail. He is level 6 and has an 18 strength. He wants to make a melee attack with his first attack and trip with his second attack. So for his second attack he will being using his +1 BAB (6/1 BAB) to determine his CMB?
1. Which of the following apply to CMB; Weapon Focus, Weapon Enchantments, situational modifiers and buff spells?
When you attempt to perform a combat maneuver, make an attack roll and add your CMB in place of your normal attack bonus. Add any bonuses you currently have on attack rolls due to spells, feats, and other effects. These bonuses must be applicable to the weapon or attack used to perform the maneuver.
So yes, any of those bonuses that apply to a trip weapon being used to make the trip attempt will apply.
2. Does a trip attack with a two-handed weapon that uses 1.5 str bonus also go into the CMB (Str+BAB) ?
The 1.5 str bonus is to damage, not to hit. CMB is an attack roll, not a damage roll.
CMB = Base attack bonus + Strength modifier + special size modifier
3. When I am attacking with a full attack and want use one of my attacks to trip do I use the BAB of the attack I am using for it? or do I use my highest BAB attack towards the CMB?
You use the appropriate attack penalty depending on which attack you're making.
Example Fighter 2 is making a full attack with a flail. He is level 6 and has an 18 strength. He wants to make a melee attack with his first attack and trip with his second attack. So for his second attack he will being using his +1 BAB (6/1 BAB) to determine his CMB?
Yep!