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.
Near Mint - $14.600
Lightly Played - $11.700
Moderately Played - $10.200
Heavily Played - $8.800
Damaged - $7.300
Near Mint Spanish - $14.600
Lightly Played Spanish - $11.700
Moderately Played Spanish - $10.200
Heavily Played Spanish - $8.800
Damaged Spanish - $7.300