Wall of Fire [Limited Edition Alpha] White Set: Kaladesh Promos Type: Legendary

Set: Kaladesh Promos Type: Legendary Planeswalker — Chandra Rarity: Mythic Cost: {2}{R}{R}

Set: War of the Spark Type: Legendary Planeswalker — Tezzeret Rarity: Mythic Cost: {4}{U}{B} Creature and planeswalker spells you cast have affinity for artifacts

or enchanted by anything black

If you search your library this way

" —Nomad sentry

Wall of Fire [Limited Edition Alpha] White Set: Kaladesh Promos Type: LegendarySet: Limited Edition Alpha 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.