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 - $6.000
Lightly Played - $4.800
Moderately Played - $4.200
Heavily Played - $3.600
Damaged - $3.000
Near Mint Spanish - $6.000
Lightly Played Spanish - $4.800
Moderately Played Spanish - $4.200
Heavily Played Spanish - $3.600
Damaged Spanish - $3.000