Kediss, Emberclaw Familiar

Nov 10, 2020 · To have two commanders, both must have the partner ability as the game begins. Losing the ability during the game doesn't cause either to cease to be your commander.

Nov 10, 2020 · An effect that checks whether you control your commander is satisfied if you control one or both of your two commanders.

Nov 10, 2020 · Kediss's triggered ability will trigger if any commander you control deals combat damage to an opponent, not just your commander.

Nov 10, 2020 · If something refers to your commander while you have two commanders, it refers to one of them of your choice. If you are instructed to perform an action on your commander (e.g. put it from the command zone into your hand due to Command Beacon), you choose one of your commanders at the time the effect happens.

Nov 10, 2020 · If your Commander deck has two commanders, you can only include cards whose own color identities are also found in your commanders' combined color identities. If Falthis and Kediss are your commanders, your deck may contain cards with black and/or red in their color identity, but not cards with green, white, or blue.

Nov 10, 2020 · Once the game begins, your two commanders are tracked separately. If you cast one, you won't have to pay an additional {2} the first time you cast the other. A player loses the game after having been dealt 21 damage from any one of them, not from both of them combined.

Nov 10, 2020 · 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.