Spell: Rustin's March

Rustin's March

Enchantment [Mind-Affecting]
Level: Bard 6, Cleric 6
Components: V, S
Casting Time: 1 full-round action
Range: Long (400 ft. + 40 ft./level)
Targets: Any number of willing creatures within range
Duration: 10 minutes/level
Saving Throw: None
Spell Resistance: Yes (harmless)

You bind many voices into a common purpose.

Affected creatures gain a +2 morale bonus on attack rolls, saving throws and skill checks whenever they are within 30 feet of at least one other affected creature.

Whenever two or more affected creatures flank the same target, each gains an additional +2 bonus on attack rolls against that target.

As a move action, any affected creature may choose another affected creature within 60 feet. Until the beginning of its next turn, it may use the higher of its own or the chosen creature's Wisdom modifier on Will saves and Sense Motive checks.

Most importantly, affected creatures become extraordinarily difficult to divide. Any magical effect that would cause them to attack, distrust or abandon one another suffers a -4 penalty to its save DC. If the effect does not allow a save, affected creatures immediately gain a new saving throw to resist it.

When cast upon a group of twenty or more creatures, the spell's morale bonuses increase by +1.

This spell reflects the organizational genius required to bring many different people together in pursuit of a shared goal, transforming a collection of individuals into a movement.