The best Boons of Salvation are the ones that improve an activity you actually need: general battle EXP for leveling, gift or meal discounts for recruitment spending, and equipment discounts for an army that needs affordable gear. There is no single purchase order that makes every route and roster equally efficient. Buy against the current bottleneck, then use the next few objectives to decide whether another discount or a specific proficiency boost should come next.
Boons are purchased with Karma Shards at the Perch in Dagsion or the Shrine of Causality in the Obelisk Chamber. Polygon's early Boon guide explains that shards come from Notable Deeds shared across protagonists. That shared progression makes a purchase relevant beyond the immediate hero, but it still helps to choose something you will use rather than an attractive bonus disconnected from your plan.
Make a broad EXP bonus your default comparison
General experience is a reasonable early candidate when the army needs ordinary level growth. Both Polygon and Game8's Boon recommendations place an experience increase among their early priorities. The reasoning is straightforward: improving battle gains helps development during battles you already intend to fight.
That does not make the general EXP bonus identical to every skill bonus. Weapon proficiency and class development have their own requirements, so a character's ordinary level can rise without resolving the exact certification problem you were trying to solve. Check the class overview and the relevant character screen before deciding which kind of experience is actually holding the build back.
Buy recruitment discounts when you have a recruitment plan
Gift discounts are useful when you repeatedly purchase gifts for characters you are trying to recruit. Game8 makes that connection explicit, while Polygon also recommends meal discounts because shared meals are another support-building activity. A discount's practical value therefore depends on using that activity, rather than merely owning the Boon.
Start from the target character and the relationship requirement. The recruitment guide, gift finder and support guide can help turn a general intention to recruit more people into specific preparation. If your next goal requires another condition rather than more purchased relationship activities, an unrelated discount will not remove that obstacle by itself.
Meals and gifts also serve different spending patterns. Polygon's preference for both is advice about recurring relationship costs, not proof that every player must buy them before improving equipment. Compare the purchases you actually intend to make during the next stretch of free time before choosing which discount to unlock first.
Lower equipment costs when upkeep is the constraint
Weapon and item shop discounts reduce the cost of buying supplies. Game8 highlights them for players exploring the world map and finding useful but expensive equipment, while Polygon includes the Weapons Discount in its early priorities. If outfitting the active army is the immediate problem, these savings address that problem directly.
Blacksmith Discount is a related but separate option. Polygon recommends it because repairs and refining cost gold, so an army repeatedly using those services benefits from reducing that expense. Compare the actual work you plan to order at the blacksmith with the equipment you intend to buy, rather than treating every gear-related discount as interchangeable.
A lower price does not make an unnecessary purchase efficient. Review the character's current equipment and next role before shopping simply because a Boon is active. This recommendation follows the distinction between equipment acquisition and upkeep, rather than a tested claim that one universal shopping list offers the best return.
Target the proficiency you are preparing to use
The skill EXP Boons are divided by category. Game8 lists separate bonuses for swords, spears, axes, bows, brawling, Black Magic and White Magic, with additional categories for movement-related skills. These let you direct a purchase toward a planned certification or combat role rather than spreading resources across requirements your army does not need.
The same source explicitly says these skill bonuses apply to experience from battle and not training. That restriction is central to their value: a player intending to gain most of the relevant progress in training menus should not assume the Boon improves those sessions too. Choose the bonus alongside the activity that will make use of it, then verify the intended proficiency in the character's information.
Match route-specific spending to route-specific tools
Game8 connects Rider and Flier EXP bonuses with mounted development, noting their relevance to Cai's mount-focused route. It also discusses Authority EXP in relation to Theodora's battalions. Those are useful examples of matching a bonus to a system your current route actually provides rather than purchasing by category name alone.
For an early-route plan, consult the Cai overview or Theodora overview before assuming the same special mechanics are available everywhere. A battalion-focused purchase has a different practical role from a weapon proficiency purchase for a unit without that route's tools. Later carryover can change the broader plan, so keep the current part of the campaign in view instead of applying an early-route restriction to every future situation.
Consider travel costs if carriages are part of the route
Polygon recommends Carriage Discount because carriages trade a gold fee for much shorter journeys between connected locations. That can make it worthwhile when your exploration plan repeatedly relies on paid carriage travel. The benefit concerns the travel you actually use, so walking-focused short trips and frequent long-distance carriage trips create different reasons to prioritize it.
Read the available destinations and your next objective before buying for a hypothetical itinerary. A cheaper carriage cannot take you to a destination that the current connection does not offer, nor does the discount itself unlock a region. Use the route overview to organize where you intend to go, then decide whether lowering those travel fees competes well with your other immediate needs.
Reassess as more options open
RPG Site's Boons and Notable Deeds explanation describes Boons as global bonuses that can be toggled after purchase. It also marks some higher-tier unlock estimates as uncertain, so there is no reason to turn those estimates into a rigid universal completion schedule. Check which upgrades are actually available on your save when another path is finished.
A useful decision rule is to choose the next purchase from the next real goal. Favor experience when battle growth is missing, recruitment discounts when relationship spending is planned, and upkeep or travel savings when those costs dominate the route. Revisit the choice as the army changes, keeping the recommendation tied to documented effects and your current needs while weighing how often you expect to use each purchased benefit.