Pointed Discussion

In a duel this will more or less just empty everyone's hand, won't it? Not much fun, but potentially effective. In multiplayer, though, this seems like a good test to see who perceives who as a threat. Just don't expect to make any new allies of your own by playing it.

I think that in a multiplayer game this card would be loads of fun. And in a duel you would get to see if they are holding anything of value as they will most likely stop the chain before they lose it.

3.5 out of 5 (mostly for the group game)

MULTIPLAYER MADNESS!
You know, use a madness deck in multi player so no one wants to target you so it spreads around the table.

Wow, this is funner than I thought, my friends tripped out.

Rakdos would love this card. Demigod of Revenge and/or madness :)

and then there were none

Use it with cards that give you shroud, such as True Believer. With Leyline of Sanctity you can potentially play this with no drawback on turn 2 in {B}{W}..

Run with Psychic Purge. They discard two cards, then toss it back at you and lose 10 life.

Geth's Grimoire to completely negate the card disadvantage. And give you card filtering to boot.

Well think of this:
T1: Quest for the nihl stone
T2: Chain of smog

You now sit upon a fully charged 5 damage per turn, if they copy it to you then you can copy it back to them leading them ever closer to an empty hand, if not then you just got them to discard two cards for two mana, pure efficency.

Liliana's Caress absolutely loves this in multiplayer.

Funtimes with Obstinate Baloth and Wilt-Leaf Liege!

Perhaps the only way to make an opponent discard your cards without Hive Mind.

Psychic Purge
Guerrilla Tactics
Mangara's Blessing
Dodecapod
Metrognome
Obsinate Baloth
Wilt-Leaf Liege
Sand Golem

I love the idea - I really do - but how likely is it that someone would ever copy it (or cast it in the first place)? I don't see many solid reasons.
1) You have no cards left that you're worried about discarding.
2) You need to be certain that your opponent can't answer an upcoming play.
3) You think your opponent is hurt more by discarding than you are; although whichever deck originally cast it surely has some synergy.
4) You enjoy playing chicken.

Of course, there's always the Sicilian logic that if your opponent played the spell, then you know he or she probably doesn't mind if you sent it back at him or her (and perhaps suggests that he or she will send it at you again); therefore it is generally strategically bad to copy it back. But your opponent must have known you'd think that, and therefore would know that you think it would be unwise to copy it. Thus, he or she could safely cast it even if he or she couldn't afford to have it sent back...but you know that! So clearly you would send it back, knowing that your opponent is only casting it because he or she thinks you won't send it back! But your opponent knows that you know!

The trick, then, it to build up an immunity to discard spells and effects (by playing Madness and/or Hellbent), if by "discard spells and effects" you mean iocane powder.

(But your opponent would know that you're immune!)

Type your comment here.

CHAIN OF DOG

In a multiplayer game, throw out a Megrim, then play Chain of Smog, and watch the sparks fly.

Any black player: "Go ahead, copy it.. " *evil grin*

Even without shenanigans, any deck running this will be ready for low hand size and the opponent likely won't be.

Functionally a "every discards their hand" or a 2 mana color-light Mind rot.

No one will send this back unless they are prepared to lose four cards or only have one card remaining in their hand so you cannot copy it. Depending on the situation, Salvage Dreams can offset the loss or potentially devastate the opponent for playing chicken.

Edit: Dream Salvage, my bad.