Command Undead Feat

[Fenrisnorth]

Command undead the feat says you control undead when you channel negative energy. "As if under the effects of control undead" and that intelligent undead get a new save every day.

The duration is infinite otherwise, right? Because a new save every day makes no sense for a 1min/level effect like control undead.

[David Thomassen]

Command Undead Feat - "as if under the effects of control undead...You can control any number of undead, so long as their total Hit Dice do not exceed your cleric level"
Control Undead Spell - "Targets up to 2 HD/level"
So yes it is a very nice feat & that new save per day is a long time (Ideal for bad guys)