is echoing strike doing physical or magic damage?

it work like spell but use weapon damage I tried to find answer on google but couldnt find it

so does echoing strike do physical damage or magic damage?

black cleft or bonebrake? -magic resist or amp?

I would lopve detailled answer plz

It is physical as far as I know. I can farm any area in the game. By using a hex, this works even before getting a demon who permanently casts amplify damage.
In hell, amplify damage should tripple your damage against normal monsters.

Physical

U can test vs physical immune ghost enemies in hell etc, u dont do any dmg to them
So maybe the skills listed magic damage gets converted to physical? Idk

where are y'all putting your remaining points?

Blood oath or consume depends if u want more buff duration of life/dmg or tankiness