Fairness in RPG gameplay

[Skyblade]

Or just do instant death spells like so:
If you expect it to take on average 50 turns to kill the boss, then make it so the instant death spell has like a 1.5% chance of hitting. So you are probably better off just whittling it down, but the option is always there.

So the solution to any boss that's giving you trouble becomes "Pick a god and pray"? RNG should never be that critical of a component. Even with a small chance, if you can just instantly kill a boss, it's broken.