[Level 3] I cost 2 Energy and 1 Calm Rune less. (While you have 3+ XP, get the effect.) [Level 6] I cost 4 Energy and 2 Calm Runes less instead. [Level 11] I cost 6 Energy and 3 Calm Runes less instead. [Level 16] I can't be chosen by enemy spells and abilities.