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 - $7.000
Lightly Played - $5.600
Moderately Played - $4.900
Heavily Played - $4.200
Damaged - $3.500
Near Mint Spanish - $7.000
Lightly Played Spanish - $5.600
Moderately Played Spanish - $4.900
Heavily Played Spanish - $4.200
Damaged Spanish - $3.500