Umbris, Fear Manifest [Innistrad: Crimson Vow Commander] Dwarf Advisor Whenever you cast a spell

Whenever you cast a spell from exile

sacrifice Sea Serpent

create a 1/1 blue and red Insect creature token with flying and haste

Aegis of the Emperor — Commanders you control have protection from everything

Poxwalkers are the victims of the Walking Pox

Umbris, Fear Manifest [Innistrad: Crimson Vow Commander] Dwarf Advisor Whenever you cast a spellSet: 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.