Tangle Wire [From the Vault: Twenty] Zombie Elf Shaman Nightmare's power and toughness are

Nightmare's power and toughness are each equal to the number of Swamps you control

Then that permanent's controller may sacrifice a land

(It can't be blocked except by creatures with horsemanship

Imaginary Friend

then draws that many cards

Tangle Wire [From the Vault: Twenty] Zombie Elf Shaman Nightmare's power and toughness areSet: From the Vault: Twenty Type: Artifact Rarity: Mythic Cost: {3} Fading 4 (This artifact enters the battlefield with four fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can't, sacrifice it.) At the beginning of each player's upkeep, that player taps an untapped artifact, creature, or land they control for each fade counter on Tangle Wire.