Umbris, Fear Manifest [Innistrad: Crimson Vow Commander] Dwarf Advisor Sacrifice a Thopter: Create a

Sacrifice a Thopter: Create a 4/4 colorless Construct artifact creature token

Poxwalkers are the victims of the Walking Pox

If that spell is countered this way

providing you have the appropriate tools to carve them

Whenever you cast a spell from exile

Umbris, Fear Manifest [Innistrad: Crimson Vow Commander] Dwarf Advisor Sacrifice a Thopter: Create aSet: Innistrad: Crimson Vow Commander Type: Legendary Creature Nightmare Horror Rarity: Mythic Cost: {3}{U}{B} Umbris, Fear Manifest gets +1 +1 for each card your opponents own in exile. Whenever Umbris or another Nightmare or Horror enters the battlefield under your control, target opponent exiles cards from the top of their library until they exile a land card.