Silas Renn, Seeker Adept

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

Nov 10, 2020 · An effect that instructs you to "cast" a card doesn't allow you to play lands.

Nov 10, 2020 · You may cast that card this turn even if Silas Renn leaves the battlefield.

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 · You can choose two commanders with partner that are the same color or colors. In Commander Draft, you can even choose two of the same commander with partner if you drafted them. If you do this, make sure you keep the number of times you've cast each from the command zone clear for "commander tax" purposes.

Nov 10, 2020 · Silas Renn doesn't change when you can cast the target artifact card. For example, if you target an artifact card without flash, you can cast it only during your main phase when the stack is empty.