Ignore Target's Defense (ITD) treats a targeted pet, normal or minion monster as having 0 defense when calculating chance to hit for melee and missile attacks. Thus only attacker level (alvl) and defender level (dlvl) determine chance to hit:
% Chance to hit = 100 * 2 * alvl / (alvl + dlvl)
User will always have the maximum 95% chance to hit when user level is equal to or greater than that of the target.
- ITD applies only to attacks made by the user, including Blade Shield.
- ITD on a weapon applies only to attacks (including Dragon Talon, Dragon Tail and Dragon Flight) made using that weapon. 
- ITD does not apply to any of the following:
- Chance to hit displayed by character screen when cursor is over Attack Rating field does not take ITD into account.