The fight itself doesn't look overly difficult, particular with staggers eventually weakening his magic attack to the point where Meteor is doing 200 damage. It's just a 5 minute zerg and since it's not 'spammable' like other voidwatch you can go all out with SV songs/Embrava etc.

What will limit the supply of scrolls is that it isn't spammable (need to either clear the other 3 Caturae areas for KIs or spend 990k cruor per person to access) and for now probably less than 10% of people actually have access to the zone itself.