And this doesnt mean necessarily winning through damage, but rather playing so many spells that it becomes a consistent threat thanks to it giving prowess to your other creatures, while also being able to use both your and your opponents spells from the graveyard

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Captain Nghathrod and Umbris, Fear Manifest are the only commanders in town since theyre the only ones who care about other Horror creatures, but Toxrill, the Corrosive is a great backup up too
A three mana 3/2 with Vigilance and Haste is a great starting point, and there are plenty of ways to trigger Valiant in this format