2021-03-24:
[VER 0.6.7] Because I hate studying and rather code but yeah-Mass enhancing is now added. Type .massenhance / .massenh <card ID> -<filters to enhance> -<same> (for if you want to only enhance same copies of the card).
E.g. [.massenh 3 -rarity uncommon -same], enhances card 3 with all of your uncommon cards that have the same name as the card itself.
Note: If you don't type anything, you will automatically sacrifice all cards of common rarity; E.g. [.enh 3]
A better filtering system is now added as well.
.inv 1 -<name : card name> -<rarity : card rarity> can also be added to enhance your inventory experience.
E.g. [.inv 1 -name Kirito -rarity common -sort level] will show you all of Kirito cards that are common rarity, shown from the highest level to the loweest level.
NOTE: ENHANCING DELETES THE CARDS THAT YOU ARE USING TO ENHANCE WITH! Proceed in your own risk.