damage reduction

I've seen custom maps with items that reduce physical damage by a certain %. Is there a particular ability that does this, or am I going to have to figure out how to trigger it?

Tryed Hardened Skin?
Or Berserk with a factor less than 1.00?

just use elune's grace or something, it can reduce damage taken by a percentage amount.

Elune's Grace can only reduce piercing and magic damage, if you want to have a generic physical damage reducing ability Hardened Skin is the best solution (set a % on the proper field instead of 1.00 which means a 100% chance); for a spell damage reduction use both Elune's Grace or the ability that Runed Bracers use.

I think a berserk with a negative "percent extra damage taken" value might do the trick.

Problem with hardened skin is that it does specific damage amounts, not a percent, if I remember correctly.

Yes it is but it only block part of the damage not percent.

-Av3n

I'm sure Hardened Skin has a field for doing percent reduction.

"Damage Factor - 1.00", or something similar