Wall of Wood [Alpha Edition]Set: Alpha Edition Type: Creature Wall Rarity: Common Cost: {G} Defender (This creature can't attack.) Everybody knows that to ward off trouble, you knock on wood. But usually it's better to make a wall out of the wood and let trouble do the knocking.

Set: Sword & Shield: Brilliant Stars Type: Water Rarity: Secret Rare Retreat cost: Colorless

Set: Gym Heroes 1st Edition Type: Lightning Rarity: Common Retreat cost: Colorless

Exile a creature card from your graveyard: Create a tapped 2/2 black Zombie creature token

Set: Unlimited Edition Type: Creature — Goblin Rarity: Rare Cost: {1}{R}{R} Other Goblins get +1/+1 and have mountainwalk

Set: Ixalan Type: Creature — Human Cleric Rarity: Rare Cost: {W} At the beginning of your upkeep

Set: Southern Islands Type: Psychic Rarity: Promo

Set: McDonald's Promos: 2015 Collection Type: Water Rarity: Promo Retreat cost: Colorless

but the standard reminds them why they're there

Whenever Merchant Ship attacks and isn't blocked

Mantis riders know their mounts owe them no allegiance

Exploit (When this creature enters the battlefield

Set: Friday Night Magic 2005 Type: Enchantment — Aura Rarity: Rare Cost: {G} Enchant creature