Attack bonus cap

In Neverwinter Nights, the maximum Attack Bonus a character can gain through magic is capped at +20.

Item bonuses which count toward the cap
 * Weapon Enhancement bonus
 * Weapon Attack Bonus

Arcane spells which count toward the cap
 * True strike
 * Magic weapon
 * Greater magic weapon

Divine spells which count toward the cap
 * Bless
 * Divine favor
 * Magic fang
 * Aid
 * Greater magic weapon
 * Prayer
 * Divine power
 * Awaken
 * Battletide

Special abilities which count toward the cap
 * Bard - Bard Song
 * Cleric - War domain's Battle Mastery