Wall of Wood [Alpha Edition] Aether Revolt Prerelease Promos Wei Field Marshal's power is

Wei Field Marshal's power is equal to the number of Swamps you control

or flipped face-up

Set: Shonen Jump Magazine Promos Card type: Trap Card Rarity: Ultra Rare "Pay half your Life Points

Set: Black & White: Dark Explorers Type: Fire Rarity: Ultra Rare Retreat cost: Colorless

This effect doesn't remove Green Ward

Wall of Wood [Alpha Edition] Aether Revolt Prerelease Promos Wei Field Marshal's power isSet: 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.