Warlock – “Expansion” [4th campaign, 2nd mission]

The mission isn't long because you need to max out both heroes. Experience is gained very quickly. However, it takes time to get a full set of spells for them in the treasure room and utopia. Especially dark magic for Shadia. If you're lucky, Railag might get everything in the castles. But Shadia might need several months to get all the dark spells.