than 61% health, you deal 41 damage.
level 13 if you have less than 64% health, you deal 44 damage.
level 14 if you have less than 67% health, you deal 47 damage.
level 15 if you have less than 70% health, you deal 50 damage.
level 16 if you have less than 73% health, you deal 53 damage.
level 17 if you have less than 76% health, you deal 56 damage.
level 18 if you have less than 79% health, you deal 59 damage. 