Instead of making three four-color commanders, they came up with the Partner mechanic, which allowed players to run two commanders and combine their color identity
If all of Brigid's Command's targets are illegal as it tries to resolve, it will do nothing
If you can't cast these exiled cards, they'll go to your graveyard, and Valakut Exploration will deal damage equal to that number of exiled cards to each opponent
Armor Wars Arni Slays the Troll Avengers: Under Siege Battle of Frost and Fire Book of Mazarbul Burn, Burn, Tree and Fern Day of the Moon Esper Terra Fable of the Mirror-Breaker Forging the Tyrite Sword Founding of Omashu Heaven Sent Hidetsugu Consumes All Ifrit, Warden of Inferno In the Darkness Bind Them Invasion of the Giants Kardur's Vicious Return Korvold and the Noble Thief Kumano Faces Kakkazan Lavabrink Repels the Magmaloth Maximum Carnage Oath of Eorl Origin of Thor Origin of the Hidden Ones Phoenix, Warden of Fire Ral and the Implicit Maze Rediscover the Way Roar of Endless Song Roar of the Fifth People Showdown of the Skalds Summon: Brynhildr Summon: Esper Ramuh Summon: Esper Valigarmanda Summon: G.F
Just remember: Torbran, Thane of Red Fell adds two additional damage only after damage is multiplied with Emancipation