If you do this preliminary planning in advance of the tournament, you'll have a better-tuned deck, and you'll make fewer mistakes during sideboarding
It also has the least fun in the text box
Thankfully, just like Selvala, Explorer Returned, Word of Command is not a very good spell
Boreas Charger There has been a LOT of experimentation with white card designs that deal with land and mana ramp over the years, but for every few failed cards in the vein of Aerial Surveyor and Cartographers Hawk, you get a playable effect like Boreas Charger
Call the Skybreaker Cenn's Enlistment Decaying Time Loop Deeproot Historian Embrace the Unknown Flame Jab Formless Genesis Glamerdye Jund 'Em Out (playtest) Monstrify Oona's Grace Raven's Crime Reality Scramble Savage Conception Six Spitting Image Syphon Life Throes of Chaos Waves of Aggression Worm Harvest Wrenn and Six
Because Bruna puts all the auras onto herself without needing to cast anything, we just need to make sure our hand and graveyard has auras to enchant her with