White has no cards in hand. They’re basically fucked. Maybe if they had a better board state, but black is up on blockers / sacrifice materiel and is about to target themselves with that draw four, giving them massive card advantage. White may be up three mana, but that gap will close very quickly unless they top deck some draw spells (and let’s be real, white draw sucks), especially with black having access to powerful fast mana pieces like Dark Ritual, Burnt Offering or Culling of the Weak.