VentilatorOfDoom wrote:I guess Harm and Heal work 10 points per caster level, a lvl 20 char can heal 200 points of damage & Harm 200 points of dmg. Thats the explanation. Your char was 18th lvl.
edit: oops you said he was lvl 18, well that's it
The max damage on Harm is 150.
My interpretation was that damage would be calculated first (18 x 10hp = 180), then maxed per the spell (150hp). If the creature saves, then the creature takes half damage.
Instead, the math seems to be (18 x 10hp = 180, creature save, then check max). It's a question of when the damage cap is applied, and in this case, the cap is applied after the save is rolled (or failed).