Currency

In Arcana Tactics, there are 2 type of currency. it's easily distinguishable by game currency and quest currency. The game currency are the ones that are going to stick with the account. The quest currency on the other hand, it will disappear after finishing the quest, but you will earn it again once you start another quest.

Gold
The most common currency that player will use. Gold are obtainable by completing quest including story, achievement, events, missions and converted from rubies, selling relics or arcana. Gold can be use for many things such as purchasing items in the game shop, expanding arcana, arcana tab, and relic inventory, and upgrading your heroes (with Soul stones), arcana (with other arcana or blank), and relics.

Crystal
Crystal are much rare compare to gold, you can earn crystal from completing story challenge(s), achievement(s), event(s), win arena[currently buggy?] and converted from rubies. Crystal can be use to buy item in shop, summon hero(es), and relic(s).

Rubies
Rubies are the least common currency, to earn, you must use real money in exchange for ruby(ies) with rubies, currently it can be converted to Crystal, purchase Gold, and summon arcana.

Skin Points
Skin points are currency that can only be obtain by buying packages with real money. It can be used to purchase skins (currently only 1 stars heroes are available)

Honors
Honors are currency that you can obtain by (supposedly winnin(apparently different from stamina...)g arena? i dont have proof....) hourly rank reward. It can be traded for an exchange honors shop starting from arcana(s) summoning ticket to relic and vitality

Gem
A currency you can obtain story from defeating enemies, completing wave, using some items, selling hero(es), and getting it from certain arcana. One of the most valuable currency since player will use gem(s) to buy heroes or item that can be use to add more gem(s) or cube(s). It's crucial for player to know when to use this currency with the most advantage as possible

Cube
currency that's much rare compared to gem(s), obtainable from only finishing waves, defeating a boss, or obtain from items. It can be used to expand field, convert into gem(s), hero summon (2-4 stars), item summon, summon scroll. The cube shop will always have these option and never change. Some option require cooldown(s).