General of Undeath(Player's Guide to FaerÃ»n)
Level: Cleric 8,
Components: V, S, DF,
Casting Time: 1 standard action
Duration: 1 day/level
This spell increases the number of Hit Dice of undead that you can control by an amount equal to five times your caster level.
When the duration expires, you lose control of the extra undead as if you had voluntarily relinquished control of them.