This might sound like a silly question, but we're having a debate at our table. When making a combat maneuver as part of an attack string during a full attack (ie: disarm, but say with your second of three attacks that round), is the CMB calculated from the highest BAB or from the second bonus?
Or, for simplicity's sake, is the CMB always calculated using your highest BAB?
"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."
While it only specify bonuses, I think penalties should apply as well (e.g. the -5 penalty for your second iterative attack).
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This might sound like a silly question, but we're having a debate at our table. When making a combat maneuver as part of an attack string during a full attack (ie: disarm, but say with your second of three attacks that round), is the CMB calculated from the highest BAB or from the second bonus?
Or, for simplicity's sake, is the CMB always calculated using your highest BAB?
No. If done with an attack action, say a disarm like you suggested, you must use the lower BAB, in this case using BAB -5. Also, if you are power-attacking, you are also taking that penalty to your CMB roll too.
So, no, CMB is NOT always calculated using your highest BAB.
Many thanks Alan and Hogarth - I consider myself enlightened.