Convection
Rank 1: Reduces the mana cost of your Shock, Lightning Bolt, Lava Burst, and Chain Lightning spells by 2%.
Rank 2: Reduces the mana cost of your Shock, Lightning Bolt, Lava Burst, and Chain Lightning spells by 4%.
Rank 3: Reduces the mana cost of your Shock, Lightning Bolt, Lava Burst, and Chain Lightning spells by 6%.
Rank 4: Reduces the mana cost of your Shock, Lightning Bolt, Lava Burst, and Chain Lightning spells by 8%.
Rank 5: Reduces the mana cost of your Shock, Lightning Bolt, Lava Burst, and Chain Lightning spells by 10%.