Wall of Nets [Exodus] Arkhos One of the greatest steeds

One of the greatest steeds in the empire

Set: Visions Type: Enchantment Rarity: Uncommon Cost: {2}{B} You may cast Necromancy as though it had flash

but they're easy to catch

Set: HeartGold & SoulSilver: Call of Legends Type: Fire Rarity: Promo

If it's a Mechanologist item card with cost 0

Wall of Nets [Exodus] Arkhos One of the greatest steedsSet: Exodus Type: Creature Wall Rarity: Rare Cost: {1}{W}{W} Defender (This creature can't attack.) At end of combat, exile all creatures blocked by Wall of Nets. When Wall of Nets leaves the battlefield, return all cards exiled with Wall of Nets to the battlefield under their owners' control.