I don't think there's 5.
In Brown? No, there are not. So let's think outside the box, shall we?
First, for the evil cards.
1. King Ahab
Type: Evil Char. • Brigade: Brown • Ability: 11 / 11 • Class: Warrior • Special Ability:
Search deck for an O.T. evil Fortress. Negate green cards with strength 4 or greater. If Jezebel is in battle, you may play a brown O.T. Enhancement.
Obviously the first option. Now, he may seem like only one card, but he also leads us to...
2. The Amalekites' Slave
Type: Evil Char. • Brigade: Gold/Brown • Ability: 4 / 4 • Class: None • Special Ability: If blocking, you may place this card in opponent's Land of Bondage to
search your deck for a human Evil Character and add it to the battle.This bad boy soul gens for you and searches him out (or someone nastier if GoS is already out).
3. Unknown Nation
Type: Curse • Brigade: Gold • Ability: 0 / 6 • Class: None • Special Ability: If opponent’s Hero is in battle, you may discard this card to
search draw pile for a human Evil Character and add it to battle. Cannot be interrupted.
Same reasoning as for Am Slave (minus the soul gen) with only slightly more vulnerability.
What else is there, you ask? Well...let's look at
good cards. I know what you're thinking, but consider this: There are 2 Purple and 1 Gold Hero that can do what you need here. Purple works well with your defense to begin with, but it also meshes well with Sam, banding, Disciples (to an extent), and Isaiah. Gold is also in many decks, not to mention Sam. You wouldn't necessarily be wasting a rescue, and these guys can search for good
OR evil, and the Gold option can search for
any fortress at all. If you use any other fortresses, these characters can give you a boost for the whole game:
4. King Solomon
Type: Hero Char. • Brigade: Purple • Ability: 9 / 11 • Class: None • Special Ability: Look at opponent's hand.
Search deck for Glory of the Lord or
an O.T. Fortress and put it in play.
5. King Hiram
Type: Hero Char. • Brigade: Purple • Ability: 10 / 4 • Class: Warrior • Special Ability: You may draw a card or
search deck for an O.T. Fortress and add it to hand.6. Zaccheus (Ap)
Type: Hero Char. • Brigade: Yellow • Ability: 5 / 2 • Class: None • Special Ability: Holder may
search draw pile for one Fortress card. Shuffle draw pile.
Hope this all helps you, but these are really the only options you have to get GoS out faster. Gave you 6 cards that can do it, and notice that the last 3 can do so on a battle challenge or search something else useful that you may need.