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.
NM-Mint - $12.00
Lightly Played - $10.80
Moderately Played - $9.60
Heavily Played - $8.40
Damaged - $6.00
NM-Mint Non English - $12.00
Lightly Played Non English - $10.80
Moderately Played Non English - $9.60
Heavily Played Non English - $8.40
Damaged Non English - $6.00