Remaining Health of creature starting with 10HP after one attack wearing available

Armor.
Skill | Normal | Magic/Enchanted Armor | Plate Armor | Heavy Armor |
Thunderstorm | 9 | 9 | 12 | 15 |
Firestorm/Sniper | 7 | 8 | 10 | 13 |
Shockwave | 6 | 8 | 9 | 12 |
Lightning/Rage Potion | 5 | 7 | 8 | 11 |
Rage Elixir | 4 | 7 | 7 | 10 |
Holy Light | 0 | 5 | 3 | 6 |
15 damage Bolt | 0 | 2 | 0 | 1 |
Unless it stacks (i.e. damage is divided by 4, 8, 16...) it only beats Heavy Armor vs. Bolts in a small quanta range.
The only other reason for taking this instead is for creatures to get past Gravity Shield.
p.s. Did I miss any skills?