The offense statistics would be calculated as follows, usingUsing the druid's BAB and the adjusted Strength modifier (STR), the offense statistics would be calculated based on which attacks or maneuvers you use. Note that these formulas may be adjusted by other miscellaneous bonuses or penalties.
When making primary natural attacks, or using a standard action to attack or initiate a grapple, you use the following:
Attack roll using a primary natural weapon = BAB + STR - 2 (size) + misc
Attack roll = d20 + BAB + STR - 2 (size)Bite damage roll = 4d6 + STR + misc
Bite damage roll = 4d6 + STRArms damage roll = 2d6 + STR + misc
Arms damage roll = 2d6 + STRSecondary tentacles attack roll = BAB + STR - 2 (size) - 5 + misc
Tentacles damage roll = 8d6 + STRCMB = BAB + STR + 2 (size) + 1 + misc
Grapple maneuver = d20 + BAB + STR + 2 (size) + 4 (grab) + 1CMB to grapple (such as primary tentacles grapple roll) = CMB + 4 (grab)
Other maneuvers = d20 + BAB + STR + 2 (size) + 1Secondary tentacles grapple roll = CMB + 4 (grab) - 5
Constrict damage roll = 8d6 + \$\lfloor\$STR*3/2\$\rfloor\$
If you make a full attack, then your tentacles are a secondary natural weapon, and you use the following instead for your tentacles:
Tentacles damage roll (if primary) = 8d6 + STR + misc
Attack roll = d20 + BAB + STR - 2 (size) - 5Tentacles damage roll (if secondary) = 8d6 + \$\lfloor\$STR*1/2\$\rfloor\$ + misc
Grab grapple check = d20 + BAB + STR + 2 (size) + 4 (grab) + 1 - 5Constrict damage roll = 8d6 + \$\lfloor\$STR*3/2\$\rfloor\$
Damage roll = 8d6 + \$\lfloor\$STR*1/2\$\rfloor\$