Max had a few troubles with learning the [ Curse ] spell, but eventually he did manage to learn it as well.
The curse spell was extremely practical because Max could technically imbue it on any item given enough time.
He could imbue curse on a piece of paper and then send it as a letter in a sealed envelope to his enemy, who would be afflicted with the curse once they come in contact with the paper.
He could use it on items or even his own armour, this way if the enemy's skin ever came into contact with his armour they would have a cursed effect from it.
The only downside was, the curse was not everlasting. Depending on the thickness of mixture used it could last for up to 3-5 months, but would definitely need to be redrawn after that.
The duration would undoubtedly improve with mastery, and Max could already see ways to make the curse permanent by carving it into something, but it was not practical for surfaces such as glass or cloth.