Rishkar's Expertise (Ripple Foil) [Modern Horizons 3 Commander]

Set: Modern Horizons 3 Commander Type: Sorcery Rarity: Rare Cost: {4}{G}{G} Draw cards equal to the greatest power among creatures you control.You may cast a spell with mana value 5 or less from your hand without paying its mana cost. Control the Great Conduit? You might as well try to divert a river with your hands.