So weird idea....

What if in the mission start room you could alchemize 2 different kinds of useables?

Blue minerals (Moonstone) would be alchemized into:

"Sprite Quick-charge packs"

These when used would immediately shave time off the sprite skill cooldown.
These would comes in 5 star levels and would be percent based

1* = 20%
2*= 40%
3*= 60%
4*= 80%
5*= 100%

For example lets say your sprite's skill cooldown is 60 seconds. If you use a 3* charge pack the time remaining would be reduced by 60% of 60 seconds (or 36 seconds). Like HP pills when at full HP these pickups couldn't be activated when your sprite on cooldown.

These could only be crafted in the Mission start room and in Subtowns.

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For the Green minerals (Valestone) you could craft:

"Damage booster packs"

These would increase the damage output of sprite skills by a percentage

1* = +20%
2*= +40%
3*= +60%
4*= +80%
5*= +100%

For example lets say your Drakon's Fireball deals 100 damage in a certain stratum the boost from a 3* booster would make the damage 160. If you wanted to boost the damage you would activate this pickup and then your sprite skill. This boost would last for 10 seconds or until your sprite skill recharges (So 10 seconds or less time).

These could also be crafted in the Mission start room and in Subtowns.

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The crafting cost for these are purely mineral.

1*= 5 mineral units
2*= 10 mineral units
3*= 15 mineral units
4*= 20 mineral units
5*= 25 mineral units