Change #68d1d331f543357b045e937b:

The wielder of the Dimensional Ballista gains the ability to to summon a Siege Weapon unit of the current era. This unit gains the Magical tag. This unit may be summoned regardless, and does not take up a unit slot if a cost of 1 nation MP plus one per era is met, otherwise it is free but takes up a slot. → The wielder may summon a Siege Weapon unit of the current Era. This unit gains the Magical trait. The unit may be summoned without taking a unit slot if the wielder pays a cost of 1 Nation Magic Point, plus 1 additional Nation Magic Point per Era. If no cost is paid, the unit is summoned for free but occupies a unit slot.