Ataque Preciso está no Livro Net de talentos (não-canônicos)
Accurate Attack [General, Fighter]
You can sacrifice one attack for greater accuracy on the next.
Prerequisite: Base attack bonus +6
Benefit: When making a full attack you may forgo all but the first attack to receive a +2 bonus to hit for each attack you have forgone.
Special: You can take this feat up to four times. Each time you take it after the first you increase the bonus for each attack sacrificed by 1 (to a maximum of +5).
Example: A 13th level fighter has three attacks in a round with base attack bonuses of +13/+8/+3. The fighter chooses to use Accurate Attack and make a single attack with a base attack of +17 (+13, +2 for each of the two tertiary attacks not taken).
A fighter may select Accurate Attack as one of his fighter bonus feats.
Você também pode querer considerar Weapon Finesse , que permite adicionar bônus Dex ao invés de Str bônus para acertar - isso ajudará se seu bônus Dex for maior que seu bônus de Str (como é o caso da maioria dos Rogues), mas apenas para armas leves .
Mas isso parece quase exatamente o que você está pedindo:
(from Dragon Compendium)
You are skilled in finding your opponent's weakness and striking where it hurts most.
Prerequisite: DEX 13, Ability to sneak attacks
Benefit: When making an attack that would qualify as a sneak attack, you may take away any number of dice from your sneak attack damage and add a +2 circumstance bonus on your attack roll for each die reduction you make. You may convert as many of your dice from your sneak attack damage as you wish in this manner. However, if you make more than one sneak attack during a round and are using this feat, you must convert the same number of dice for each one.