Nightmare [Collectors' Edition]Set: Collectors' 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.

Set: Theros Tokens Type: Token Creature — Boar Rarity: Common

*History of the Goblin Wars*

if that creature was destroyed this way

When Emrakul

Set: Portal Three Kingdoms Type: Creature — Human Soldier Rarity: Rare Cost: {3}{R} Horsemanship (This creature can't be blocked except by creatures with horsemanship

Whenever a source deals damage to Phyrexian Obliterator

Set: Revised Edition Type: Artifact Rarity: Rare Cost: {1} Mana Vault doesn't untap during your untap step

Set: Explorers of Ixalan Type: Sorcery Rarity: Mythic Cost: {3}{U}{U} Target player takes an extra turn after this one

let's visit the plains

{T}: Add X mana in any combination of colors

"They seek to break us

{T}: Add {W}