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 - $9.900
Lightly Played - $8.000
Moderately Played - $7.000
Heavily Played - $6.000
Damaged - $5.000
Near Mint Spanish - $9.900
Lightly Played Spanish - $8.000
Moderately Played Spanish - $7.000
Heavily Played Spanish - $6.000
Damaged Spanish - $5.000