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 - $7.500
Lightly Played - $6.000
Moderately Played - $5.200
Heavily Played - $4.500
Damaged - $3.800
Near Mint Spanish - $7.500
Lightly Played Spanish - $6.000
Moderately Played Spanish - $5.200
Heavily Played Spanish - $4.500
Damaged Spanish - $3.800