I can answer her more readily than the many other crappy cards out there
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The mana value of the back face of a transforming double-faced permanent is the mana value of its front face
$2.99 Iron Spider, Stark Upgrade Marvel's Spider-Man $0.35 Diamond Weapon Final Fantasy $3.99 Tarrian's Soulcleaver (2224 - Regalla's Wrath - Non-Foil) Secret Lair $1.99 Darksteel Juggernaut The Brothers' War Commander Decks $8.49 Farseek (2222 - Non-Foil) Secret Lair $0.99 Traxos, Scourge of Kroog Dominaria $0.99 Verdurous Gearhulk Kaladesh $2.79 Uthros Research Craft Edge of Eternities Commander Decks $1.29 Steel Overseer Edge of Eternities Commander Decks $3.99 Cyberdrive Awakener Edge of Eternities Commander Decks $42.99 Blightsteel Colossus (2223 - FAS-BOR7 Horus - Non-Foil) Secret Lair $1.29 Kappa Cannoneer Edge of Eternities Commander Decks 0 results found
If I take a look at the average decklist, in addition to the lands and Sol Ring, its relying on a couple of mana rocks, Cultivate, and Kodamas Reach to fix the colors and get enough mana to cast Atraxa and your higher-cost spells
After the beginning phases containing the additional upkeep steps, the game proceeds to the next phase as normal, which is likely to be your postcombat main phase (unless something has added even more phases
