A class who fights with wits and the might of their feathers and brushes.
A scriptomancer uses seals written on pergament to seal magic spells cast by other players and/or himself, so that he can release them later on.
Release requires to simply turn the pergament a spell was ealed into apart and can be activated without delay, but if you wanna seal the spell of an ally or an enemy, it takes some time. You can activate the seal-skill, which let's you absorb the next spell cast in an area near you, but have to wait a turn afterwards - the time is needed to finish the seal on the pergament.
This class needs to be played thoughtfully, because the seal-mechanic would be pretty strong in battles and you have to decide on which spells to keep or throw out at your foes (or use them to heal/buff your team). Obvious balancing issues: The scriptomancer cannot store endless amounts of spells and carry them around. Maybe a cap of 3-5 would be alright.
Stats should be a bit weaker then other classes, but if you play rhe scriptomancer thoughtfully and try to safe the really big magic spells for boss fights, you can turn the tight of a harsh battle easily into your favor!
I hope this class fits into the theme