Yes, you can make a player lose by dealing 21 total damage to them with their own commander. (If it keeps getting stolen by yourself or others, a cumulative total 21 damage from their own commander will make them lose.)
Can you do Commander damage with someone elses Commander?
It’s important to note that only damage dealt in combat, i.e. when a commander attacks another player, counts for Commander damage. This means that, yes, you can steal someone’s commander and deal Commander damage with it.
Can you attack commanders directly?
Of course they can! They’re just like any other creature, so it’s perfectly fair game to send them into the red zone if you want. Not only that, but if your general deals 21 damage to a player over the course of a game, that player loses!
Can you bounce a Commander?
Playing it from your hand doesn’t “wipe” the tax. If you play it twice, then it gets bounced, you can play it from your hand for its normal cost, but if it gets killed, you still have to play the + tax to play it from the command zone a third time.
Does kediss Do Commander damage?
The damage the commander deals as a result of Kediss’s triggered ability isn’t combat damage. It isn’t tracked with combat damage dealt by commanders and won’t cause Kediss’s ability to trigger again. Kediss’s triggered ability won’t trigger if a commander you control deals combat damage to a planeswalker.
Can you take control of someone else’s commander?
Yes, you can take control of someone else’s commander. The rule about returning the commander to the Command Zone reads (emphasis mine): 903.9. If a commander would be exiled from anywhere or put into its owner’s hand, graveyard, or library from anywhere, its owner may put it into the command zone instead.
Do you win the game with a stolen commander?
See rule 903, “Commander.” The clearly says that the damage must be dealt by the same commander, not necessarily yours, so yes, you win the game if you deal 21 damage with a stolen commander.
Can you take control of someone else in Magic The Gathering?
It would seem that this question is answered indirectly here and here, but I wanted a more definitive answer to the question. Yes, you can take control of someone else’s commander. The rule about returning the commander to the Command Zone reads (emphasis mine): 903.9.
What is the rule for returning a commander to the command zone?
The rule about returning the commander to the Command Zone reads (emphasis mine): 903.9. If a commander would be exiled from anywhere or put into its owner’s hand, graveyard, or library from anywhere, its owner may put it into the command zone instead. This replacement effect may apply more than once to the same event.
