What does a higher Spellcasting ability do for me?
Higher Spellcasting ability will do two things: increase the amount of mana generated by that hero, and increase the amount of mana per turn that hero can “channel” into spells. For example, a hero with Spellcasting I will generate 5 mana per turn, while a hero with Spellcasting II will generate 10 mana per turn. Spellcasting V is the highest level, generating 25 mana per turn. Note that a leader will generate 5 more mana in addition to these amounts. “Channeling” is simply a measure of how much spellcasting a hero can do in a single turn. For each level of Spellcasting a hero can cast 10 mana worth of spells per turn (up to a maximum of 50 at Spellcasting V). For example, Healing Water costs 10 mana to cast a hero with Spellcasting II could cast that spell twice in a single turn. Many spells are expensive and will require multiple turns to cast. For a hero with Spellcasting I, Town Gate (50 mana) will take 5 turns to cast, while a hero with Spellcasting V could cast it in one turn.