Nightmare [30th Anniversary Edition] Enchantment Land you'll find:

you'll find:

{P} — Put a +1/+1 counter on a creature you control

cards or Characters with a cost of 3 or less

Set: Secret Lair Drop Series Type: Legendary Creature — Sliver Mutant Rarity: Mythic Cost: {W}{U}{B}{R}{G} {3}: Search your library for a Sliver card

target creature falls asleep

Nightmare [30th Anniversary Edition] Enchantment Land you'll find:Set: 30th Anniversary Edition Type: Creature Nightmare Horse Rarity: Rare Cost: {5}{B} Flying (This creature can't be blocked except by creatures with flying or reach.) Nightmare's power and toughness are each equal to the number of Swamps you control. The Nightmare arises from its lair in the swamps. As the poisoned land spreads, so does the Nightmare's rage and terrifying strength.