My friend and I were discussing things about Thornmail. My question is if it returns basic attacks that do magic damage such as Teemo's passive magic damage, Wit's End, or Warwick passive. I don't think it does but I am not 100% sure; hence the post. If I could get any answers that would be awesome. Thanks guys.
Zombiemaster2 votesThornmail will reflect damage from any auto attack. However, it will only reflect physical damage that is dealt, not magic damage. So any on-hit effect that deals magic damage, like the ones you mentioned, will not add to Thornmail's reflected damage.
Vistha Kai1 votesIt should be noted that abilities dealing mixed damage will be partially reflected by Thornmail.
I.E. 
Urchin Strike's physical component.
Jubbinaut2 voteshttp://leagueoflegends.wikia.com/wiki/Thornmail
On being hit, Thornmail will reflect 30% of the physical damage dealt by the attacker, including most on-hit effects.
GundayMonday1 votesReflects physical on hit effects. So teemo E won't be reflected (magic damage), but master yi's double strike (physical damage) will be reflected.
Jubbinaut1 votesPrecisely.
7ha7guy7771 votesI don't think it does, but based on the wording it should. It doesn't work on-hit effects, however a Viktor Q auto or a runeglaive auto might get damage returned. I really want to test this
Vistha Kai2 votesThink of it like this:
If the attack/spell can proc 
effect and that spell deals physical damage, it will interact with Thornmail.
Renaille1 votesIt reflects auto attacks, not on hit effects such as teemo E, witts end or bork of the ruined king.
