I don’t think this type of build is a good choice for Ravager - there’s a kill here with Elemental Runes but it’s a struggle according to its author [1.1.9.7] Symbols Unreadable - Runebinder Cold/Fire hybrid Deceiver [sr+][vid]
Btw Mirror for 3s invulnerability and Nullification to get rid of the “Eye debuff” (which increases Ravager damage a lot) would help you for sure.
The problem is you don’t have a way to leech or regen life. And a lot of that would be needed.
Which Mage Hunter has the easiest time with Ravager? Aether Reaping Arc perhaps (with high Phys res, Ghoul, Nullification, Mirror, ADCTH potions this shouldn’t be a biggie 
)? Or some DW Shooter? Or this by @afanasenkov26
