Karona, false god

[Double-O-Scotch]

When an opponent untaps and gains control of karona (during a game of EDH with karona as my commander), does the damage he deal under my opponents control count towards my opponents general damage, or even my own general damage?

[Greg54js]

It counts as a second general for your opponents.

I had a similar situation where I had gained control of an opponents general and swung with my own an his general. In this case it counted the damage from my general and then did a separate count for my opponents general.

So tl;dr
It creates it's own separate 21 damage count

[BlackJester]

Really?   I'm not really familliar with EDH, but I would have thought that:

903.14a A player that's been dealt 21 or more combat damage by the same commander over the course of the game loses the game. (This is a state-based action. See rule 704.)

Akroma would still be the same commander in terms of damage count. I'm willing to defer to the EDH gurus on this, though.

[Gorzo]

Really?   I'm not really familliar with EDH, but I would have thought that:

903.14a A player that's been dealt 21 or more combat damage by the same commander over the course of the game loses the game. (This is a state-based action. See rule 704.)

Akroma would still be the same commander in terms of damage count. I'm willing to defer to the EDH gurus on this, though.

I always figured it was like this, too. As far as I'm aware the rules don't specify anything about who controls the commander. But to be honest I've never played with or against a Korona deck, and have no personal experience with her particular mechanic.
But I think it and all {mind control} or {act of treason} effects work like jester says. It's the same 1 commander no matter who controls it, so it would be using the same 21-damage clock.

[Double-O-Scotch]

Thanks guys. Wasn't quite sure how that worked as karona is such an oddball.

[Greg54js]

but I always thought that since it is not your actual commander there would be two separate counts for commander damage? maybe I'm wrong...
Ruling from MTGcommander.net

If a player has been dealt 21 points of combat damage by a particular Commander during the game, that player loses a game.

    This is an additional state based effect.
    Commander Damage is cumulative throughout the game; nothing can reduce the amount of damage a Commander has previously done to a player.
    Because it is a property of the card and not a characteristic of the game object, a card is still the same Commander even if it leaves the field and returns.
    While effects can raise a player's life total, it doesn't reduce the amount of damage previously taken from a Commander. (eg: Beacon of Immortality)
    Conversely, combat damage can be reduced, prevented, or replaced as it is taken, in which case it was never dealt and doesn't count towards the total taken from that Commander. (eg: Fog or Captain's Maneuver)
    Commander Damage is specific to each Commander/Player pairing, not combined across all Commander.
    A player can lose if he or she is dealt 21 points of combat damage by his or her own Commander (ie: under someone else's control).

[izik99]

I like how i dont even understand what were talking about cuz nobodies linked yet.

{karona, false dog}

[Greg54js]

I like how i dont even understand what were talking about cuz nobodies linked yet.

{karona, false god}

Lol do you even play commander/EDH

[izik99]

I like how i dont even understand what were talking about cuz nobodies linked yet.

{karona, false god}

Lol do you even play commander/EDH

Nope.

[Greg54js]

lol then this rule question doesn't apply to you

[BlackJester]

 
    Commander Damage is specific to each Commander/Player pairing, not combined across all Commander.
    A player can lose if he or she is dealt 21 points of combat damage by his or her own Commander (ie: under someone else's control).

Yeah, I'm not sure what that bold part means. 
"combined across all commander"
I think maybe they are saying that it has to be 21 from a specific player's Commander. Like if two players each had {Doran, Siege Tower} as their Commander, their commander damage wouldn't add together. Only 21 points from Gary's Doran or 21 from Sally's Doran.

I still think, if Gary hits you for 10 with your Karona and Sally hits you for 11 with your Karona you should be dead.

But then, I've never played a game of EDH in my life, so what do I know? 😏

[Greg54js]

Jester it means:

Arnold is playing with {nicol bolas}
Nathan is playing with {cromat}
Arnold casts {act of treason} and swings with both generals dealing 12 regular damage and 7 commander damage with nicol bolas and 5 with cromat.

The different commanders and their damage don't mix together. they each have separate counts

[BlackJester]

Well, that's not what I meant, but I agree.

Say Nathan, Adrian, and Jules are playing. Nathan has dealt 14 points to Jules with his {Nicol Bolas}, then Adrian casts {Act of Treason}, stealing Bolas and deals 7 to Jules. Would this kill Jules?  I think so.

Or would that be a different "Commander/Player pair"?

[Greg54js]

Well, that's not what I meant, but I agree.

Say Nathan, Adrian, and Jules are playing. Nathan has dealt 14 points to Jules with his {Nicol Bolas}, then Adrian casts {Act of Treason}, stealing Bolas and deals 7 to Jules. Would this kill Jules?  I think so.

Or would that be a different "Commander/Player pair"?

Different commander/player pair

[BlackJester]

Okay, but I just think that's weird. 😒