Pure red spells have higher critical chance. Mixed with green: devastates shields. Mixed with blue: deals more damage but may fizzle if too much red.
Base heal: 4-7 HP. Critical heal: 7-10 HP (rare). Mixed with red: heals slightly more but reduces critical chance. Mixed with blue: 33% chance to create a shield (3-8 strength).
Normal shield: 3-8 strength. Critical shield: 7-12 strength. Mixed with green: may cause 1-3 self-damage but creates stronger shield (6-9). Mixed with red: 50% chance to fizzle if too much red.