Wall of Fire [Alpha Edition] Secret Lair Drop Series Voracious Larva or another creature

Voracious Larva or another creature enters the battlefield under your control

Set: Mystery Booster Type: Instant Rarity: Common Cost: {W} Exile target creature you control

Set: Collectors' Edition Type: Artifact Rarity: Rare Cost: {1} {1}

Set: Phyrexia: All Will Be One Type: Legendary Creature — Phyrexian Horror Rarity: Mythic Cost: {5}{G}{G} Reach

Argentum is Karn's original name for that plane

Wall of Fire [Alpha Edition] Secret Lair Drop Series Voracious Larva or another creatureSet: Alpha Edition Type: Creature Wall Rarity: Uncommon Cost: {1}{R}{R} Defender (This creature can't attack.) {R}: Wall of Fire gets +1 +0 until end of turn. Conjured from the bowels of hell, the fiery wall forms an impassable barrier, searing the soul of any creature attempting to pass through its terrible bursts of flame.