Siege Weapon's BlessingSpell 6
Source Pathfinder Battlecry!
Traditions Arcane, Divine, Occult
Cast

Range touch
Target one mounted siege weapon
Duration 1 minute
You trace a magic rune onto the body of a siege weapon, calling upon fate or your faith to guide the attacks your allies make with this machine. For the spell's duration, any skill checks attempted to Load the siege weapon can be rolled twice, taking the better result; these skill checks gain the fortune trait. In addition, any saving throws attempted by creatures caught in the siege weapon's Launch area must be rolled twice, taking the worse result; these saving throws gain the misfortune trait.
Heightened (9th) The duration is 8 hours.
Traits
Something of uncommon rarity requires special training or comes from a particular culture or part of the world. Some character choices give access to uncommon options, and the GM can choose to allow access for anyone. Less is known about uncommon creatures than common creatures. They typically can't be summoned. The DC of Recall Knowledge checks related to these creature is increased by 2.
ConcentrateAn action with this trait requires a degree of mental concentration and discipline.
ManipulateYou must physically manipulate an item or make gestures to use an action with this trait. Creatures without a suitable appendage can't perform actions with this trait. Manipulate actions often trigger reactions.