User blog comment:Atmey/Impregnable Mail/@comment-5287086-20130107224512/@comment-3529242-20130108001406

Nope stacking health won't help, and 2 warmogs stack much worse in S3. AD carries crit for 700 without armor you would it as true damage, a whole 2500+ gold health item would just protect you from a single AA that happen twice in a second with the correct AS.