First let me say in reading up on the Slayer, it seems peculiar that he is a better assassin than an actual assassin. (Just found that strange)
Is it possible for a Slayer to walk up to somebody, engage in conversation, use imp or greater feint, sneak attack and then force a fort save with the Assassinate ability?
Assassinate
Benefit: A slayer with this advanced talent can kill foes that are unable to defend themselves. To attempt to assassinate a target, the slayer must first study his target for 1 round as a standard action. On the following round, if the slayer makes a sneak attack against the target and that target is denied its Dexterity bonus to AC, the sneak attack has the additional effect of possibly killing the target. This attempt automatically fails if the target recognizes the slayer as an enemy. If the sneak attack is successful, the target must attempt a Fortitude saving throw with a DCequal to 10 + 1/2 the slayer's level + the slayer's Intelligence modifier. If the target fails this save, it dies; otherwise, the target takes the sneak attack damage as normal and is then immune to that slayer's assassinate ability for 24 hours.
Greater Fient
Prerequisites: Combat Expertise, Improved Feint, base attack bonus +6, Int 13.
Benefit: Whenever you use feint to cause an opponent to lose his Dexterity bonus, he loses that bonus until the beginning of your next turn, in addition to losing his Dexterity bonus against your next attack.
Normal: A creature you feint loses its Dexterity bonus against your next attack.
Is it possible for a Slayer to walk up to somebody, engage in conversation, use imp or greater feint, sneak attack and then force a fort save with the Assassinate ability?
Assassinate
Benefit: A slayer with this advanced talent can kill foes that are unable to defend themselves. To attempt to assassinate a target, the slayer must first study his target for 1 round as a standard action. On the following round, if the slayer makes a sneak attack against the target and that target is denied its Dexterity bonus to AC, the sneak attack has the additional effect of possibly killing the target. This attempt automatically fails if the target recognizes the slayer as an enemy. If the sneak attack is successful, the target must attempt a Fortitude saving throw with a DCequal to 10 + 1/2 the slayer's level + the slayer's Intelligence modifier. If the target fails this save, it dies; otherwise, the target takes the sneak attack damage as normal and is then immune to that slayer's assassinate ability for 24 hours.
Greater Fient
Prerequisites: Combat Expertise, Improved Feint, base attack bonus +6, Int 13.
Benefit: Whenever you use feint to cause an opponent to lose his Dexterity bonus, he loses that bonus until the beginning of your next turn, in addition to losing his Dexterity bonus against your next attack.
Normal: A creature you feint loses its Dexterity bonus against your next attack.