Ok so i have a trap/ww sin and am using a infinity merc with eth fort armor and tal helm. he seems to still take some dmg and was woundering what i should change... If it seems fine and i need to learn to tele him outta harm or mb more let me know thx.

1. maybe eth coh or eth stone?
2. coa with 2 ums or keep tals and maybe um it?

thanks for the help and sorry with the simple but driving me nuts question.